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Timeline of quantum computing and communication

This is a timeline of quantum computing.

1960s

1968

1970s

1970

1973

1975

  • R. P. Poplavskii publishes "Thermodynamical models of information processing" (in Russian)[4] which showed the computational infeasibility of simulating quantum systems on classical computers, due to the superposition principle.

1976

  • Polish mathematical physicist Roman Stanisław Ingarden publishes the paper "Quantum Information Theory" in Reports on Mathematical Physics, vol. 10, 43–72, 1976. (The paper was submitted in 1975.) It is one of the first attempts at creating a quantum information theory, showing that Shannon information theory cannot directly be generalized to the quantum case, but rather that it is possible to construct a quantum information theory, which is a generalization of Shannon's theory, within the formalism of a generalized quantum mechanics of open systems and a generalized concept of observables (the so-called semi-observables).

1980s

1980

  • Paul Benioff describes the first quantum mechanical model of a computer. In this work, Benioff showed that a computer could operate under the laws of quantum mechanics by describing a Schrödinger equation description of Turing machines, laying a foundation for further work in quantum computing. The paper[5] was submitted in June 1979 and published in April 1980.
  • Yuri Manin briefly motivates the idea of quantum computing.[6]
  • Tommaso Toffoli introduces the reversible Toffoli gate,[7] which (together with initialized ancilla bits) is functionally complete for reversible classical computation.

1981

  • At the First Conference on the Physics of Computation, held at MIT in May, Paul Benioff and Richard Feynman give talks on quantum computing. Benioff's built on his earlier 1980 work showing that a computer can operate under the laws of quantum mechanics. The talk was titled “Quantum mechanical Hamiltonian models of discrete processes that erase their own histories: application to Turing machines”.[8] In Feynman's talk, he observed that it appeared to be impossible to efficiently simulate an evolution of a quantum system on a classical computer, and he proposed a basic model for a quantum computer.[9]

1982

1984

1985

1988

  • Yoshihisa Yamamoto and K. Igeta propose the first physical realization of a quantum computer, including Feynman's CNOT gate.[15] Their approach uses atoms and photons and is the progenitor of modern quantum computing and networking protocols using photons to transmit qubits and atoms to perform two-qubit operations.

1989

1990s

1991

1992

  • David Deutsch and Richard Jozsa propose a computational problem that can be solved efficiently with the determinist Deutsch–Jozsa algorithm on a quantum computer, but for which no deterministic classical algorithm is possible. This was perhaps the earliest result in the computational complexity of quantum computers, proving that they were capable of performing some well-defined computational task more efficiently than any classical computer.

1993

1994

1995

1996

1997

1998

1999

2000s

2000

2001

  • First execution of Shor's algorithm at IBM's Almaden Research Center and Stanford University. The number 15 was factored using 1018 identical molecules, each containing seven active nuclear spins.
  • Noah Linden and Sandu Popescu proved that the presence of entanglement is a necessary condition for a large class of quantum protocols. This, coupled with Braunstein's result (see 1999 above), called the validity of NMR quantum computation into question.[34]
  • Emanuel Knill, Raymond Laflamme, and Gerard Milburn show that optical quantum computing is possible with single-photon sources, linear optical elements, and single-photon detectors, launching the field of linear optical quantum computing.
  • Robert Raussendorf and Hans Jürgen Briegel propose measurement-based quantum computation.[35]

2002

2003

2004

  • First working pure state NMR quantum computer (based on parahydrogen) demonstrated at Oxford University and University of York.
  • Physicists at the University of Innsbruck show deterministic quantum-state teleportation between a pair of trapped calcium ions.[41]
  • First five-photon entanglement demonstrated by Jian-Wei Pan's group at the University of Science and Technology of China, the minimal number of qubits required for universal quantum error correction.[42]

2005

2006

  • Materials Science Department of Oxford University, cage a qubit in a "buckyball" (a molecule of buckminsterfullerene), and demonstrated quantum "bang-bang" error correction.[45]
  • Researchers from the University of Illinois at Urbana–Champaign use the Zeno Effect, repeatedly measuring the properties of a photon to gradually change it without actually allowing the photon to reach the program, to search a database without actually "running" the quantum computer.[46]
  • Vlatko Vedral of the University of Leeds and colleagues at the universities of Porto and Vienna found that the photons in ordinary laser light can be quantum mechanically entangled with the vibrations of a macroscopic mirror.[47]
  • Samuel L. Braunstein at the University of York along with the University of Tokyo and the Japan Science and Technology Agency gave the first experimental demonstration of quantum telecloning.[48]
  • Professors at the University of Sheffield develop a means to efficiently produce and manipulate individual photons at high efficiency at room temperature.[49]
  • New error checking method theorized for Josephson junction computers.[50]
  • First 12 qubit quantum computer benchmarked by researchers at the Institute for Quantum Computing and the Perimeter Institute for Theoretical Physics in Waterloo, as well as MIT, Cambridge.[51]
  • Two dimensional ion trap developed for quantum computing.[52]
  • Seven atoms placed in stable line, a step on the way to constructing a quantum gate, at the University of Bonn.[53]
  • A team at Delft University of Technology in the Netherlands created a device that can manipulate the "up" or "down" spin-states of electrons on quantum dots.[54]
  • University of Arkansas develops quantum dot molecules.[55]
  • Spinning new theory on particle spin brings science closer to quantum computing.[56]
  • University of Copenhagen develops quantum teleportation between photons and atoms.[57]
  • University of Camerino scientists develop theory of macroscopic object entanglement, which has implications for the development of quantum repeaters.[58]
  • Tai-Chang Chiang, at Illinois at Urbana–Champaign, finds that quantum coherence can be maintained in mixed-material systems.[59]
  • Cristophe Boehme, University of Utah, demonstrates the feasibility of reading spin-data on a silicon-phosphorus quantum computer.[60]

2007

  • Subwavelength waveguide developed for light.[61]
  • Single-photon emitter for optical fibers developed.[62]
  • Six-photon one-way quantum computer is created in lab.[63]
  • New material proposed for quantum computing.[64]
  • Single-atom single-photon server devised.[65]
  • First use of Deutsch's Algorithm in a cluster state quantum computer.[66]
  • University of Cambridge develops electron quantum pump.[67]
  • Superior method of qubit coupling developed.[68]
  • Successful demonstration of controllably coupled qubits.[69]
  • Breakthrough in applying spin-based electronics to silicon.[70]
  • Scientists demonstrate quantum state exchange between light and matter.[71]
  • Diamond quantum register developed.[72]
  • Controlled-NOT quantum gates on a pair of superconducting quantum bits realized.[73]
  • Scientists contain, study hundreds of individual atoms in 3D array.[74]
  • Nitrogen in buckyball molecule used in quantum computing.[75]
  • Large number of electrons quantum coupled.[76]
  • Spin–orbit interaction of electrons measured.[77]
  • Atoms quantum manipulated in laser light.[78]
  • Light pulses used to control electron spins.[79]
  • Quantum effects demonstrated across tens of nanometers.[80]
  • Light pulses used to accelerate quantum computing development.[81]
  • Quantum RAM blueprint unveiled.[82]
  • Model of quantum transistor developed.[83]
  • Long distance entanglement demonstrated.[84]
  • Photonic quantum computing used to factor number by two independent labs.[85]
  • Quantum bus developed by two independent labs.[86]
  • Superconducting quantum cable developed.[87]
  • Transmission of qubits demonstrated.[88]
  • Superior qubit material devised.[89]
  • Single-electron qubit memory.[90]
  • Bose–Einstein condensate quantum memory developed.[91]
  • D-Wave Systems demonstrates use of a 28-qubit quantum annealing computer.[92]
  • New cryonic method reduces decoherence and increases interaction distance, and thus quantum computing speed.[93]
  • Photonic quantum computer demonstrated.[94]
  • Graphene quantum dot spin qubits proposed.[95]

2008

  • The HHL algorithm for solving linear equations was published[96]
  • Graphene quantum dot qubits[97]
  • Quantum bit stored[98]
  • 3D qubit-qutrit entanglement demonstrated[99]
  • Analog quantum computing devised[100]
  • Control of quantum tunneling[101]
  • Entangled memory developed[102]
  • Superior NOT gate developed[103]
  • Qutrits developed[104]
  • Quantum logic gate in optical fiber[105]
  • Superior quantum Hall Effect discovered[106]
  • Enduring spin states in quantum dots[107]
  • Molecular magnets proposed for quantum RAM[108]
  • Quasiparticles offer hope of stable quantum computer[109]
  • Image storage may have better storage of qubits[110]
  • Quantum entangled images[111]
  • Quantum state intentionally altered in molecule[112]
  • Electron position controlled in silicon circuit[113]
  • Superconducting electronic circuit pumps microwave photons[114]
  • Amplitude spectroscopy developed[115]
  • Superior quantum computer test developed[116]
  • Optical frequency comb devised[117]
  • Quantum Darwinism supported[118]
  • Hybrid qubit memory developed[119]
  • Qubit stored for over 1 second in atomic nucleus[120]
  • Faster electron spin qubit switching and reading developed[121]
  • Possible non-entanglement quantum computing[122]
  • D-Wave Systems claims to have produced a 128 qubit computer chip, though this claim has yet to be verified.[123]

2009

  • Carbon 12 purified for longer coherence times[124]
  • Lifetime of qubits extended to hundreds of milliseconds[125]
  • Quantum control of photons[126]
  • Quantum entanglement demonstrated over 240 micrometres[127]
  • Qubit lifetime extended by factor of 1000[128]
  • First electronic quantum processor created[129]
  • Six-photon graph state entanglement used to simulate the fractional statistics of anyons living in artificial spin-lattice models[130]
  • Single-molecule optical transistor[131]
  • NIST reads, writes individual qubits[132]
  • NIST demonstrates multiple computing operations on qubits[133]
  • First large-scale topological cluster state quantum architecture developed for atom-optics[134]
  • A combination of all of the fundamental elements required to perform scalable quantum computing through the use of qubits stored in the internal states of trapped atomic ions shown[135]
  • Researchers at University of Bristol demonstrate Shor's algorithm on a silicon photonic chip[136]
  • Quantum Computing with an Electron Spin Ensemble[137]
  • Photon machine gun developed for quantum computing[138]
  • First universal programmable quantum computer unveiled[139]
  • Scientists electrically control quantum states of electrons[140]
  • Google collaborates with D-Wave Systems on image search technology using quantum computing[141]
  • A method for synchronizing the properties of multiple coupled CJJ rf-SQUID flux qubits with a small spread of device parameters due to fabrication variations was demonstrated[142]
  • Realization of Universal Ion Trap Quantum Computation with Decoherence Free Qubits[143]
  • First chip-scale quantum computer[144]

2010s

2010

  • Ion trapped in optical trap[145]
  • Optical quantum computer with three qubits calculated the energy spectrum of molecular hydrogen to high precision[146]
  • First germanium laser brings us closer to optical computers[147]
  • Single-electron qubit developed[148]
  • Quantum state in macroscopic object[149]
  • New quantum computer cooling method developed[150]
  • Racetrack ion trap developed[151]
  • Evidence for a Moore-Read state in the   quantum Hall plateau,[152] which would be suitable for topological quantum computation
  • Quantum interface between a single photon and a single atom demonstrated[153]
  • LED quantum entanglement demonstrated[154]
  • Multiplexed design speeds up transmission of quantum information through a quantum communications channel[155]
  • Two photon optical chip[156]
  • Microfabricated planar ion traps[157][158]
  • Boson sampling technique proposed by Aaronson and Arkhipov.[159]
  • Quantum dot qubits manipulated electrically, not magnetically[160]

2011

  • Entanglement in a solid-state spin ensemble[161]
  • NOON photons in superconducting quantum integrated circuit[162]
  • Quantum antenna[163]
  • Multimode quantum interference[164]
  • Magnetic Resonance applied to quantum computing[165]
  • Quantum pen[166]
  • Atomic "Racing Dual"[167]
  • 14 qubit register[168]
  • D-Wave claims to have developed quantum annealing and introduces their product called D-Wave One. The company claims this is the first commercially available quantum computer[169]
  • Repetitive error correction demonstrated in a quantum processor[170]
  • Diamond quantum computer memory demonstrated[171]
  • Qmodes developed[172]
  • Decoherence suppressed[173]
  • Simplification of controlled operations[174]
  • Ions entangled using microwaves[175]
  • Practical error rates achieved[176]
  • Quantum computer employing Von Neumann architecture[177]
  • Quantum spin Hall topological insulator[178]
  • Two Diamonds Linked by Quantum Entanglement could help develop photonic processors[179]

2012

  • D-Wave claims a quantum computation using 84 qubits.[180]
  • Physicists create a working transistor from a single atom[181][182]
  • A method for manipulating the charge of nitrogen vacancy-centres in diamond[183]
  • Reported creation of a 300 qubit/particle quantum simulator.[184][185]
  • Demonstration of topologically protected qubits with an eight-photon entanglement, a robust approach to practical quantum computing[186]
  • 1QB Information Technologies (1QBit) founded. World's first dedicated quantum computing software company.[187]
  • First design of a quantum repeater system without a need for quantum memories[188]
  • Decoherence suppressed for 2 seconds at room temperature by manipulating Carbon-13 atoms with lasers.[189][190]
  • Theory of Bell-based randomness expansion with reduced assumption of measurement independence.[191]
  • New low overhead method for fault-tolerant quantum logic developed, called lattice surgery[192]

2013

  • Coherence time of 39 minutes at room temperature (and 3 hours at cryogenic temperatures) demonstrated for an ensemble of impurity-spin qubits in isotopically purified silicon.[193]
  • Extension of time for qubit maintained in superimposed state for ten times longer than what has ever been achieved before[194]
  • First resource analysis of a large-scale quantum algorithm using explicit fault-tolerant, error-correction protocols was developed for factoring[195]

2014

  • Documents leaked by Edward Snowden confirm the Penetrating Hard Targets project,[196] by which the National Security Agency seeks to develop a quantum computing capability for cryptography purposes.[197][198][199]
  • Researchers in Japan and Austria publish the first large-scale quantum computing architecture for a diamond-based system[200]
  • Scientists at the University of Innsbruck do quantum computations on a topologically encoded qubit which is encoded in entangled states distributed over seven trapped-ion qubits[201]
  • Scientists transfer data by quantum teleportation over a distance of 10 feet (3.048 meters) with zero percent error rate, a vital step towards a quantum Internet.[202][203]

2015

  • Optically addressable nuclear spins in a solid with a six-hour coherence time.[204]
  • Quantum information encoded by simple electrical pulses.[205]
  • Quantum error detection code using a square lattice of four superconducting qubits.[206]
  • D-Wave Systems Inc. announced on June 22 that it had broken the 1,000-qubit barrier.[207]
  • A two-qubit silicon logic gate is successfully developed.[208]
  • A quantum computer, along with quantum superposition and entanglement, is emulated by a classical analog computer, with the result that the fully classical system behaves like a true quantum computer.[209]

2016

  • Physicists led by Rainer Blatt joined forces with scientists at MIT, led by Isaac Chuang, to efficiently implement Shor's algorithm in an ion-trap-based quantum computer.[210]
  • IBM releases the Quantum Experience, an online interface to their superconducting systems. The system is immediately used to publish new protocols in quantum information processing[211][212]
  • Google, using an array of 9 superconducting qubits developed by the Martinis group and UCSB, simulates a hydrogen molecule.[213]
  • Scientists in Japan and Australia invent the quantum version of a Sneakernet communications system[214]

2017

  • D-Wave Systems Inc. announces general commercial availability of the D-Wave 2000Q quantum annealer, which it claims has 2000 qubits.[215]
  • Blueprint for a microwave trapped ion quantum computer published.[216]
  • IBM unveils 17-qubit quantum computer—and a better way of benchmarking it.[217]
  • Scientists build a microchip that generates two entangled qudits each with 10 states, for 100 dimensions total.[218]
  • Microsoft reveals Q#, a quantum programming language integrated with Visual Studio. Programs can be executed locally on a 32-qubit simulator, or a 40-qubit simulator on Azure.[219]
  • Rubayet Hossain (Omi), the former intelligent systems advisor of DARPA in collaboration with the researchers of QuAIL develop the world's first user-interactive operating system to be used in commercial quantum computers. And Intel confirms development of a 17-qubit superconducting test chip.[220]
  • IBM reveals a working 50-qubit quantum computer that can maintain its quantum state for 90 microseconds.[221]
  • First teleportation using a satellite, connecting ground stations over a distance of 1400 km apart.[222] Previous experiments was at Earth, at shorter distances.

2018

  • MIT scientists report the discovery of a new triple-photon form of light.[223][224]
  • Oxford researchers successfully use a trapped-ion technique, where they place two charged atoms in a state of quantum entanglement to speed up logic gates by a factor of 20 to 60 times, as compared with the previous best gates, translated to 1.6 microseconds long, with 99.8% precision.[225]
  • QuTech successfully tests a silicon-based 2-spin-qubit processor.[226]
  • Google announces the creation of a 72-qubit quantum chip, called "Bristlecone",[227] achieving a new record.
  • Intel begins testing a silicon-based spin-qubit processor manufactured in the company's D1D Fab in Oregon.[228]
  • Intel confirms development of a 49-qubit superconducting test chip, called "Tangle Lake".[229]
  • Japanese researchers demonstrate universal holonomic quantum gates.[230]
  • Integrated photonic platform for quantum information with continuous variables.[231]
  • On December 17, 2018, the company IonQ introduced the first commercial trapped-ion quantum computer, with a program length of over 60 two-qubit gates, 11 fully connected qubits, 55 addressable pairs, one-qubit gate error <0.03% and two-qubit gate error <1.0%[232][233]
  • On December 21, 2018, the National Quantum Initiative Act was signed into law by President Donald Trump, establishing the goals and priorities for a 10-year plan to accelerate the development of quantum information science and technology applications in the United States.[234][235][236]

2019

 
IBM Q System One (2019), the first circuit-based commercial quantum computer
  • IBM unveils its first commercial quantum computer, the IBM Q System One,[237] designed by UK-based Map Project Office and Universal Design Studio and manufactured by Goppion.[238]
  • Austrian physicists demonstrate self-verifying, hybrid, variational quantum simulation of lattice models in condensed matter and high-energy physics using a feedback loop between a classical computer and a quantum co-processor.[239]
  • Quantum Darwinism observed in diamond at room temperature.[240][241]
  • A paper by Google's quantum computer research team was briefly available in late September 2019, claiming the project has reached quantum supremacy.[242][243][244]
  • IBM reveals its biggest quantum computer yet, consisting of 53 qubits. The system goes online in October 2019.[245]
  • University of Science and Technology of China researchers demonstrate boson sampling with 14 detected photons.[246]

2020s

2020

  • UNSW Sydney develops a way of producing 'hot qubits' – quantum devices that operate at 1.5 kelvins.[247][when?]
  • Griffith University, UNSW and UTS, in partnership with seven universities in the United States, develop noise cancelling for quantum bits via machine learning, taking quantum noise in a quantum chip down to 0%.[248][249]
  • UNSW performs electric nuclear resonance to control single atoms in electronic devices.[250][when?]
  • University of Tokyo and Australian scientists create and successfully test a solution to the quantum wiring problem, creating a 2D structure for qubits. Such structure can be built using existing integrated circuit technology and has a considerably lower cross-talk.[251][when?]
  • 16 January – Quantum physicists report the first direct splitting of one photon into three using spontaneous parametric down-conversion and which may have applications in quantum technology.[252][253]
  • 11 February – Quantum engineers report that they have created artificial atoms in silicon quantum dots for quantum computing and that artificial atoms with a higher number of electrons can be more stable qubits than previously thought possible. Enabling silicon-based quantum computers may make it possible to reuse the manufacturing technology of "classical" modern-day computer chips among other advantages.[254][255]
  • 14 February – Quantum physicists develop a novel single-photon source which may allow to bridge semiconductor-based quantum-computers that use photons by converting the state of an electron spin to the polarisation of a photon. They show that they can generate a single photon in a controlled way without the need for randomly formed quantum dots or structural defects in diamonds.[256][257]
  • 25 February – Scientists visualize a quantum measurement: by taking snapshots of ion states at different times of measurement via coupling of a trapped ion qutrit to the photon environment they show that the changes of the degrees of superpositions and therefore of probabilities of states after measurement happens gradually under the measurement influence.[258][259]
  • 2 March – Scientists report to have achieved repeated quantum nondemolition measurements of an electron's spin in a silicon quantum dot: measurements that don't change the electron's spin in the process.[260][261]
  • 11 March – Quantum engineers report to have managed to control the nucleus of a single atom using only electric fields. This was first suggested to be possible in 1961 and may be used for silicon quantum computers that use single-atom spins without needing oscillating magnetic fields which may be especially useful for nanodevices, for precise sensors of electric and magnetic fields as well as for fundamental inquiries into quantum nature.[262][263]
  • 19 March – A US Army laboratory announces that its scientists analysed a Rydberg sensor's sensitivity to oscillating electric fields over an enormous range of frequencies—from 0 to 10^12 Hz (the spectrum to 0.3 mm wavelength). The Rydberg sensor may potentially be used detect communications signals as it could reliably detect signals over the entire spectrum and compare favourably with other established electric field sensor technologies, such as electro-optic crystals and dipole antenna-coupled passive electronics.[264][265]
  • 23 March – Researchers report that they have found a way to correct for signal loss in a prototype quantum node that can catch, store and entangle bits of quantum information. Their concepts could be used for key components of quantum repeaters in quantum networks and extend their longest possible range.[266][267]
  • 15 April – Researchers demonstrate a proof-of-concept silicon quantum processor unit cell which works at 1.5 kelvins – many times warmer than common quantum processors that are being developed. It may enable integrating classical control electronics with the qubit array and reduce costs substantially. The cooling requirements necessary for quantum computing have been called one of the toughest roadblocks in the field.[268][269][270][271]
  • 16 April – Scientists prove the existence of the Rashba effect in bulk perovskites. Previously researchers have hypothesized that the materials' extraordinary electronic, magnetic and optical properties – which make it a commonly used material for solar cells and quantum electronics – are related to this effect which to date hasn't been proven to be present in the material.[272][273]
  • 8 May – Researchers report to have developed a proof-of-concept of a quantum radar using quantum entanglement and microwaves which may potentially be useful for the development of improved radar systems, security scanners and medical imaging systems.[274][275][276]
  • 12 May – Researchers report to have developed a method to selectively manipulate a layered manganite's correlated electrons' spin state while leaving its orbital state intact using femtosecond X-ray laser pulses. This may indicate that orbitronics – using variations in the orientations of orbitals – may be used as the basic unit of information in novel IT devices.[277][278]
  • 19 May – Researchers report to have developed the first integrated silicon on-chip low-noise single-photon source compatible with large-scale quantum photonics.[279][280][281]
  • 11 June – Scientists report the generation of rubidium Bose–Einstein condensates (BECs) in the Cold Atom Laboratory aboard the International Space Station under microgravity which could enable improved research of BECs and quantum mechanics, whose physics are scaled to macroscopic scales in BECs, support long-term investigations of few-body physics, support the development of techniques for atom-wave interferometry and atom lasers and has verified the successful operation of the laboratory.[282][283][284]
  • 15 June – Scientists report the development of the smallest synthetic molecular motor, consisting of 12 atoms and a rotor of 4 atoms, shown to be capable of being powered by an electric current using an electron scanning microscope and moving even with very low amounts of energy due to quantum tunneling.[285][286][287]
  • 17 June – Quantum scientists report the development of a system that entangles two photon quantum communication nodes through a microwave cable that can send information inbetween without the photons ever being sent through, or occupying, the cable. On 12 June it was reported that they also, for the first time, entangled two phonons as well as erase information from their measurement after the measurement has been completed using delayed-choice quantum erasure.[288][289][290][291]
  • 13 August – Universal coherence protection is reported to have been achieved in a solid-state spin qubit, a modification that allows quantum systems to stay operational (or "coherent") for 10,000 times longer than before.[292][293]
  • 26 August – Scientists report that ionizing radiation from environmental radioactive materials and cosmic rays may substantially limit the coherence times of qubits if they aren't shielded adequately.[294][295][296]
  • 28 August – Quantum engineers working for Google report the largest chemical simulation on a quantum computer – a Hartree–Fock approximation with Sycamore paired with a classical computer that analyzed results to provide new parameters for the 12-qubit system.[297][298][299]
  • 2 September – Researchers present an eight-user city-scale quantum communication network, located in Bristol, using already deployed fibres without active switching or trusted nodes.[300][301]
  • 21 September – Researchers report the achievement of quantum entanglement between the motion of a millimetre-sized mechanical oscillator and a disparate distant spin system of a cloud of atoms.[302][303]
  • 3 December – Chinese researchers claim to have achieved quantum supremacy, using a photonic peak 76-qubit system (43 average) known as Jiuzhang, which performed calculations at 100 trillion times the speed of classical supercomputers.[304][305][306]
  • 21 December – Publication of research of "counterfactual quantum communication" – whose first achievement was reported in 2017 – by which information can be exchanged without any physical particle traveling between observers and without quantum teleportation.[307] The research suggests that this is based on some form of relation between the properties of modular angular momentum.[308][309][310]

2021

 
  • 17 June – Austrian, German and Swiss researchers present a two 19-inch rack quantum computing demonstrator, the world's first quality standards-meeting compact quantum computer.[329][330]
  • 7 July – American researchers present a programmable quantum simulator that can operate with 256 qubits,[331][332] and on the same date and journal another team presented quantum simulator of 196 Rydeberg atoms trapped in optical tweezers[333]
  • 25 October – Chinese researchers reported that they have developed the world's fastest programmable quantum computers. The photon-based Jiuzhang 2 is claimed to be able to calculate a task in one millisecond, that would otherwise had taken a conventional computer 30 trillion years to complete. And Zuchongzhi 2 is a 66-qubit programmable superconducting quantum computer that is claimed to be the current world's fastest quantum computer that can run a calculation task one million times more complex than Google’s Sycamore, as well as being 10 million times faster.[334][335]
  • 11 November – The first simulation of baryons on a quantum computer is reported by University of Waterloo.[336][337]
  • 16 November – IBM claims that it has created a new 127 quantum bit processor, 'IBM Eagle', which according to a report is the most powerful quantum processor known. According to the report, the company has not yet published an academic paper describing its metrics, performance or abilities.[338][339]

2022

  • 18 January – Europe's first quantum annealer with more than 5,000 qubits is launched in Jülich, Germany.[340]
  • 24 March – The first prototype, photonic, quantum memristive device, for neuromorphic (quantum-)computers and artificial neural networks, that is "able to produce memristive dynamics on single-photon states through a scheme of measurement and classical feedback" is invented.[341][342]
  • 14 April – The Quantinuum System Model H1-2 doubled its performance claiming to be the first commercial quantum computer to pass quantum volume 4096.[343]
  • 22 June – The world's first quantum computer integrated circuit is demonstrated.[344][345]
  • 28 June – Physicists report that interstellar quantum communication by other civilizations could be possible and may be advantageous, identifying some potential challenges and factors for detecting such. They may use, for example, X-ray photons for remotely established quantum communications and quantum teleportation as the communication mode.[346][347]
  • 15 August – Nature Materials publishes the first work showing optical initialization and coherent control of nuclear spin qubits in 2D materials (an ultrathin hexagonal boron nitride).[348]
  • 24 August – Nature publishes the first research related to a set of 14 photons entangled with high efficiency and in a defined way.[349]
  • 26 August – Created photon pairs at several different frequencies using optical ultra-thin resonant metasurfaces made up of arrays of nanoresonators.[350]
  • 29 August – Researchers generated up to 14 stable photons in an optical resonator nearly half the time and through "a scalable and freely programmable source."[351]
  • 29 August – Physicists at the Max Planck Institute entangled 14 photons together, starting from an atom of rubidium, trapped in an optical cavity that bounces electromagnetic waves around in certain patterns.[352]
  • 2 September – Researchers from The University of Tokyo and other Japanese institutions developed a systematic method that applies optimal control theory (GRAPE algorithm) to identify the theoretically optimal sequence from among all conceivable quantum operation sequences. It is necessary to complete the operations within the time that the coherent quantum state is maintained.[353]
  • 30 September – Researchers at University of New South Wales achieved a coherence time of two milliseconds, 100 times higher than the previous benchmark in the same quantum processor.[354]

See also

References

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timeline, quantum, computing, communication, this, article, section, contain, misleading, parts, please, help, clarify, this, article, according, suggestions, provided, talk, page, july, 2016, this, incomplete, list, frequently, updated, include, information, . This article or section may contain misleading parts Please help clarify this article according to any suggestions provided on the talk page July 2016 This incomplete list is frequently updated to include new information This is a timeline of quantum computing Contents 1 1960s 1 1 1968 2 1970s 2 1 1970 2 2 1973 2 3 1975 2 4 1976 3 1980s 3 1 1980 3 2 1981 3 3 1982 3 4 1984 3 5 1985 3 6 1988 3 7 1989 4 1990s 4 1 1991 4 2 1992 4 3 1993 4 4 1994 4 5 1995 4 6 1996 4 7 1997 4 8 1998 4 9 1999 5 2000s 5 1 2000 5 2 2001 5 3 2002 5 4 2003 5 5 2004 5 6 2005 5 7 2006 5 8 2007 5 9 2008 5 10 2009 6 2010s 6 1 2010 6 2 2011 6 3 2012 6 4 2013 6 5 2014 6 6 2015 6 7 2016 6 8 2017 6 9 2018 6 10 2019 7 2020s 7 1 2020 7 2 2021 7 3 2022 8 See also 9 References1960s Edit1968 Edit Stephen Wiesner invents conjugate coding published in ACM SIGACT News 15 1 78 88 1 1970s Edit1970 Edit James Park articulates the no cloning theorem 2 1973 Edit Alexander Holevo publishes a paper showing that n qubits can carry more than n classical bits of information but at most n classical bits are accessible a result known as Holevo s theorem or Holevo s bound Charles H Bennett shows that computation can be done reversibly 3 1975 Edit R P Poplavskii publishes Thermodynamical models of information processing in Russian 4 which showed the computational infeasibility of simulating quantum systems on classical computers due to the superposition principle 1976 Edit Polish mathematical physicist Roman Stanislaw Ingarden publishes the paper Quantum Information Theory in Reports on Mathematical Physics vol 10 43 72 1976 The paper was submitted in 1975 It is one of the first attempts at creating a quantum information theory showing that Shannon information theory cannot directly be generalized to the quantum case but rather that it is possible to construct a quantum information theory which is a generalization of Shannon s theory within the formalism of a generalized quantum mechanics of open systems and a generalized concept of observables the so called semi observables 1980s Edit1980 Edit Paul Benioff describes the first quantum mechanical model of a computer In this work Benioff showed that a computer could operate under the laws of quantum mechanics by describing a Schrodinger equation description of Turing machines laying a foundation for further work in quantum computing The paper 5 was submitted in June 1979 and published in April 1980 Yuri Manin briefly motivates the idea of quantum computing 6 Tommaso Toffoli introduces the reversible Toffoli gate 7 which together with initialized ancilla bits is functionally complete for reversible classical computation 1981 Edit At the First Conference on the Physics of Computation held at MIT in May Paul Benioff and Richard Feynman give talks on quantum computing Benioff s built on his earlier 1980 work showing that a computer can operate under the laws of quantum mechanics The talk was titled Quantum mechanical Hamiltonian models of discrete processes that erase their own histories application to Turing machines 8 In Feynman s talk he observed that it appeared to be impossible to efficiently simulate an evolution of a quantum system on a classical computer and he proposed a basic model for a quantum computer 9 1982 Edit Paul Benioff further develops his original model of a quantum mechanical Turing machine 10 William Wootters and Wojciech Zurek 11 and independently Dennis Dieks 12 rediscover the no cloning theorem 1984 Edit Charles Bennett and Gilles Brassard employ Wiesner s conjugate coding for distribution of cryptographic keys 13 1985 Edit David Deutsch at the University of Oxford describes the first universal quantum computer Just as a Universal Turing machine can simulate any other Turing machine efficiently Church Turing thesis so the universal quantum computer is able to simulate any other quantum computer with at most a polynomial slowdown Asher Peres points out need for quantum error correction schemes and discusses a repetition code for amplitude errors 14 1988 Edit Yoshihisa Yamamoto and K Igeta propose the first physical realization of a quantum computer including Feynman s CNOT gate 15 Their approach uses atoms and photons and is the progenitor of modern quantum computing and networking protocols using photons to transmit qubits and atoms to perform two qubit operations 1989 Edit Gerard J Milburn proposes a quantum optical realization of a Fredkin gate 16 Bikas K Chakrabarti amp collaborators from Saha Institute of Nuclear Physics Kolkata propose the idea that quantum fluctuations could help explore rugged energy landscapes by escaping from local minima of glassy systems having tall but thin barriers by tunneling instead of climbing over using thermal excitations suggesting the effectiveness of quantum annealing over classical simulated annealing 17 18 1990s Edit1991 Edit Artur Ekert at the University of Oxford proposes entanglement based secure communication 19 1992 Edit David Deutsch and Richard Jozsa propose a computational problem that can be solved efficiently with the determinist Deutsch Jozsa algorithm on a quantum computer but for which no deterministic classical algorithm is possible This was perhaps the earliest result in the computational complexity of quantum computers proving that they were capable of performing some well defined computational task more efficiently than any classical computer 1993 Edit Dan Simon at Universite de Montreal invents an oracle problem Simon s problem for which a quantum computer would be exponentially faster than a conventional computer This algorithm introduces the main ideas which were then developed in Peter Shor s factorization algorithm 1994 Edit Peter Shor at AT amp T s Bell Labs in New Jersey publishes Shor s algorithm It allows a quantum computer to factor large integers quickly It solves both the factoring problem and the discrete log problem The algorithm can theoretically break many of the cryptosystems in use today Its invention sparked a tremendous interest in quantum computers First United States Government workshop on quantum computing is organized by NIST in Gaithersburg Maryland in autumn Isaac Chuang and Yoshihisa Yamamoto propose a quantum optical realization of a quantum computer to implement Deutsch s algorithm 20 Their work introduces dual rail encoding for photonic qubits In December Ignacio Cirac at University of Castilla La Mancha at Ciudad Real and Peter Zoller at the University of Innsbruck propose an experimental realization of the controlled NOT gate with cold trapped ions 1995 Edit The first United States Department of Defense workshop on quantum computing and quantum cryptography is organized by United States Army physicists Charles M Bowden Jonathan P Dowling and Henry O Everitt it takes place in February at the University of Arizona in Tucson Peter Shor proposes the first schemes for quantum error correction 21 Christopher Monroe and David Wineland at NIST Boulder Colorado experimentally realize the first quantum logic gate the controlled NOT gate with trapped ions following the Cirac Zoller proposal 22 1996 Edit Lov Grover at Bell Labs invents the quantum database search algorithm The quadratic speedup is not as dramatic as the speedup for factoring discrete logs or physics simulations However the algorithm can be applied to a much wider variety of problems Any problem that can be solved by random brute force search may take advantage of this quadratic speedup in the number of search queries The United States Government particularly in a joint partnership of the Army Research Office now part of the Army Research Laboratory and the National Security Agency issues the first public call for research proposals in quantum information processing Andrew Steane designs Steane codes for error correction 23 David P DiVincenzo from IBM proposes a list of minimal requirements for creating a quantum computer 24 now called DiVincenzo s criteria 1997 Edit David Cory Amr Fahmy and Timothy Havel and at the same time Neil Gershenfeld and Isaac L Chuang at MIT publish the first papers realizing gates for quantum computers based on bulk nuclear spin resonance or thermal ensembles The technology is based on a nuclear magnetic resonance NMR machine which is similar to the medical magnetic resonance imaging machine Alexei Kitaev describes the principles of topological quantum computation as a method for dealing with the problem of decoherence 25 Daniel Loss and David P DiVincenzo propose the Loss DiVincenzo quantum computer using as qubits the intrinsic spin 1 2 degree of freedom of individual electrons confined to quantum dots 26 1998 Edit First experimental demonstration of a quantum algorithm A working 2 qubit NMR quantum computer is used to solve Deutsch s problem by Jonathan A Jones and Michele Mosca at Oxford University and shortly after by Isaac L Chuang at IBM s Almaden Research Center and Mark Kubinec and the University of California Berkeley together with coworkers at Stanford University and MIT 27 First working 3 qubit NMR computer Bruce Kane proposes a silicon based nuclear spin quantum computer using nuclear spins of individual phosphorus atoms in silicon as the qubits and donor electrons to mediate the coupling between qubits 28 First execution of Grover s algorithm on an NMR computer 29 Hidetoshi Nishimori amp colleagues from Tokyo Institute of Technology showed that a quantum annealing algorithm can perform better than classical simulated annealing under certain conditions 30 Daniel Gottesman and Emanuel Knill independently prove that a certain subclass of quantum computations can be efficiently emulated with classical resources Gottesman Knill theorem 31 1999 Edit Samuel L Braunstein and collaborators show that none of the bulk NMR experiments performed to date contained any entanglement the quantum states being too strongly mixed This is seen as evidence that NMR computers would likely not yield a benefit over classical computers It remains an open question however whether entanglement is necessary for quantum computational speedup 32 Gabriel Aeppli Thomas Felix Rosenbaum and colleagues demonstrate experimentally the basic concepts of quantum annealing in a condensed matter system Yasunobu Nakamura and Jaw Shen Tsai demonstrate that a superconducting circuit can be used as a qubit 33 2000s Edit2000 Edit Arun K Pati and Samuel L Braunstein proved the quantum no deleting theorem This is dual to the no cloning theorem which shows that one cannot delete a copy of an unknown qubit Together with the stronger no cloning theorem the no deleting theorem has important implication i e quantum information can neither be created nor be destroyed First working 5 qubit NMR computer demonstrated at the Technical University of Munich First execution of order finding part of Shor s algorithm at IBM s Almaden Research Center and Stanford University First working 7 qubit NMR computer demonstrated at the Los Alamos National Laboratory The standard textbook Quantum Computation and Quantum Information by Michael Nielsen and Isaac Chuang is published 2001 Edit First execution of Shor s algorithm at IBM s Almaden Research Center and Stanford University The number 15 was factored using 1018 identical molecules each containing seven active nuclear spins Noah Linden and Sandu Popescu proved that the presence of entanglement is a necessary condition for a large class of quantum protocols This coupled with Braunstein s result see 1999 above called the validity of NMR quantum computation into question 34 Emanuel Knill Raymond Laflamme and Gerard Milburn show that optical quantum computing is possible with single photon sources linear optical elements and single photon detectors launching the field of linear optical quantum computing Robert Raussendorf and Hans Jurgen Briegel propose measurement based quantum computation 35 2002 Edit The Quantum Information Science and Technology Roadmapping Project involving some of the main participants in the field laid out the Quantum computation roadmap The Institute for Quantum Computing was established at the University of Waterloo in Waterloo Ontario by Mike Lazaridis Raymond Laflamme and Michele Mosca 36 2003 Edit Implementation of the Deutsch Jozsa algorithm on an ion trap quantum computer at the University of Innsbruck 37 Todd D Pittman and collaborators at Johns Hopkins University Applied Physics Laboratory and independently Jeremy L O Brien and collaborators at the University of Queensland demonstrate quantum controlled not gates using only linear optical elements 38 39 First implementation of a CNOT quantum gate according to the Cirac Zoller proposal by a group at the University of Innsbruck led by Rainer Blatt 40 DARPA Quantum Network becomes fully operational on October 23 2003 The Institute for Quantum Optics and Quantum Information IQOQI was established in Innsbruck and Vienna Austria by the founding directors Rainer Blatt Hans Jurgen Briegel Rudolf Grimm Anton Zeilinger and Peter Zoller 2004 Edit First working pure state NMR quantum computer based on parahydrogen demonstrated at Oxford University and University of York Physicists at the University of Innsbruck show deterministic quantum state teleportation between a pair of trapped calcium ions 41 First five photon entanglement demonstrated by Jian Wei Pan s group at the University of Science and Technology of China the minimal number of qubits required for universal quantum error correction 42 2005 Edit University of Illinois at Urbana Champaign scientists demonstrate quantum entanglement of multiple characteristics potentially allowing multiple qubits per particle Two teams of physicists measured the capacitance of a Josephson junction for the first time The methods could be used to measure the state of quantum bits in a quantum computer without disturbing the state 43 In December W states of quantum registers with up to 8 qubits implemented using trapped ions are demonstrated at the Institute for Quantum Optics and Quantum Information and the University of Innsbruck in Austria 44 Harvard University and Georgia Institute of Technology researchers succeeded in transferring quantum information between quantum memories from atoms to photons and back again citation needed 2006 Edit Materials Science Department of Oxford University cage a qubit in a buckyball a molecule of buckminsterfullerene and demonstrated quantum bang bang error correction 45 Researchers from the University of Illinois at Urbana Champaign use the Zeno Effect repeatedly measuring the properties of a photon to gradually change it without actually allowing the photon to reach the program to search a database without actually running the quantum computer 46 Vlatko Vedral of the University of Leeds and colleagues at the universities of Porto and Vienna found that the photons in ordinary laser light can be quantum mechanically entangled with the vibrations of a macroscopic mirror 47 Samuel L Braunstein at the University of York along with the University of Tokyo and the Japan Science and Technology Agency gave the first experimental demonstration of quantum telecloning 48 Professors at the University of Sheffield develop a means to efficiently produce and manipulate individual photons at high efficiency at room temperature 49 New error checking method theorized for Josephson junction computers 50 First 12 qubit quantum computer benchmarked by researchers at the Institute for Quantum Computing and the Perimeter Institute for Theoretical Physics in Waterloo as well as MIT Cambridge 51 Two dimensional ion trap developed for quantum computing 52 Seven atoms placed in stable line a step on the way to constructing a quantum gate at the University of Bonn 53 A team at Delft University of Technology in the Netherlands created a device that can manipulate the up or down spin states of electrons on quantum dots 54 University of Arkansas develops quantum dot molecules 55 Spinning new theory on particle spin brings science closer to quantum computing 56 University of Copenhagen develops quantum teleportation between photons and atoms 57 University of Camerino scientists develop theory of macroscopic object entanglement which has implications for the development of quantum repeaters 58 Tai Chang Chiang at Illinois at Urbana Champaign finds that quantum coherence can be maintained in mixed material systems 59 Cristophe Boehme University of Utah demonstrates the feasibility of reading spin data on a silicon phosphorus quantum computer 60 2007 Edit Subwavelength waveguide developed for light 61 Single photon emitter for optical fibers developed 62 Six photon one way quantum computer is created in lab 63 New material proposed for quantum computing 64 Single atom single photon server devised 65 First use of Deutsch s Algorithm in a cluster state quantum computer 66 University of Cambridge develops electron quantum pump 67 Superior method of qubit coupling developed 68 Successful demonstration of controllably coupled qubits 69 Breakthrough in applying spin based electronics to silicon 70 Scientists demonstrate quantum state exchange between light and matter 71 Diamond quantum register developed 72 Controlled NOT quantum gates on a pair of superconducting quantum bits realized 73 Scientists contain study hundreds of individual atoms in 3D array 74 Nitrogen in buckyball molecule used in quantum computing 75 Large number of electrons quantum coupled 76 Spin orbit interaction of electrons measured 77 Atoms quantum manipulated in laser light 78 Light pulses used to control electron spins 79 Quantum effects demonstrated across tens of nanometers 80 Light pulses used to accelerate quantum computing development 81 Quantum RAM blueprint unveiled 82 Model of quantum transistor developed 83 Long distance entanglement demonstrated 84 Photonic quantum computing used to factor number by two independent labs 85 Quantum bus developed by two independent labs 86 Superconducting quantum cable developed 87 Transmission of qubits demonstrated 88 Superior qubit material devised 89 Single electron qubit memory 90 Bose Einstein condensate quantum memory developed 91 D Wave Systems demonstrates use of a 28 qubit quantum annealing computer 92 New cryonic method reduces decoherence and increases interaction distance and thus quantum computing speed 93 Photonic quantum computer demonstrated 94 Graphene quantum dot spin qubits proposed 95 2008 Edit The HHL algorithm for solving linear equations was published 96 Graphene quantum dot qubits 97 Quantum bit stored 98 3D qubit qutrit entanglement demonstrated 99 Analog quantum computing devised 100 Control of quantum tunneling 101 Entangled memory developed 102 Superior NOT gate developed 103 Qutrits developed 104 Quantum logic gate in optical fiber 105 Superior quantum Hall Effect discovered 106 Enduring spin states in quantum dots 107 Molecular magnets proposed for quantum RAM 108 Quasiparticles offer hope of stable quantum computer 109 Image storage may have better storage of qubits 110 Quantum entangled images 111 Quantum state intentionally altered in molecule 112 Electron position controlled in silicon circuit 113 Superconducting electronic circuit pumps microwave photons 114 Amplitude spectroscopy developed 115 Superior quantum computer test developed 116 Optical frequency comb devised 117 Quantum Darwinism supported 118 Hybrid qubit memory developed 119 Qubit stored for over 1 second in atomic nucleus 120 Faster electron spin qubit switching and reading developed 121 Possible non entanglement quantum computing 122 D Wave Systems claims to have produced a 128 qubit computer chip though this claim has yet to be verified 123 2009 Edit Carbon 12 purified for longer coherence times 124 Lifetime of qubits extended to hundreds of milliseconds 125 Quantum control of photons 126 Quantum entanglement demonstrated over 240 micrometres 127 Qubit lifetime extended by factor of 1000 128 First electronic quantum processor created 129 Six photon graph state entanglement used to simulate the fractional statistics of anyons living in artificial spin lattice models 130 Single molecule optical transistor 131 NIST reads writes individual qubits 132 NIST demonstrates multiple computing operations on qubits 133 First large scale topological cluster state quantum architecture developed for atom optics 134 A combination of all of the fundamental elements required to perform scalable quantum computing through the use of qubits stored in the internal states of trapped atomic ions shown 135 Researchers at University of Bristol demonstrate Shor s algorithm on a silicon photonic chip 136 Quantum Computing with an Electron Spin Ensemble 137 Photon machine gun developed for quantum computing 138 First universal programmable quantum computer unveiled 139 Scientists electrically control quantum states of electrons 140 Google collaborates with D Wave Systems on image search technology using quantum computing 141 A method for synchronizing the properties of multiple coupled CJJ rf SQUID flux qubits with a small spread of device parameters due to fabrication variations was demonstrated 142 Realization of Universal Ion Trap Quantum Computation with Decoherence Free Qubits 143 First chip scale quantum computer 144 2010s Edit2010 Edit Ion trapped in optical trap 145 Optical quantum computer with three qubits calculated the energy spectrum of molecular hydrogen to high precision 146 First germanium laser brings us closer to optical computers 147 Single electron qubit developed 148 Quantum state in macroscopic object 149 New quantum computer cooling method developed 150 Racetrack ion trap developed 151 Evidence for a Moore Read state in the u 5 2 displaystyle u 5 2 quantum Hall plateau 152 which would be suitable for topological quantum computation Quantum interface between a single photon and a single atom demonstrated 153 LED quantum entanglement demonstrated 154 Multiplexed design speeds up transmission of quantum information through a quantum communications channel 155 Two photon optical chip 156 Microfabricated planar ion traps 157 158 Boson sampling technique proposed by Aaronson and Arkhipov 159 Quantum dot qubits manipulated electrically not magnetically 160 2011 Edit Entanglement in a solid state spin ensemble 161 NOON photons in superconducting quantum integrated circuit 162 Quantum antenna 163 Multimode quantum interference 164 Magnetic Resonance applied to quantum computing 165 Quantum pen 166 Atomic Racing Dual 167 14 qubit register 168 D Wave claims to have developed quantum annealing and introduces their product called D Wave One The company claims this is the first commercially available quantum computer 169 Repetitive error correction demonstrated in a quantum processor 170 Diamond quantum computer memory demonstrated 171 Qmodes developed 172 Decoherence suppressed 173 Simplification of controlled operations 174 Ions entangled using microwaves 175 Practical error rates achieved 176 Quantum computer employing Von Neumann architecture 177 Quantum spin Hall topological insulator 178 Two Diamonds Linked by Quantum Entanglement could help develop photonic processors 179 2012 Edit D Wave claims a quantum computation using 84 qubits 180 Physicists create a working transistor from a single atom 181 182 A method for manipulating the charge of nitrogen vacancy centres in diamond 183 Reported creation of a 300 qubit particle quantum simulator 184 185 Demonstration of topologically protected qubits with an eight photon entanglement a robust approach to practical quantum computing 186 1QB Information Technologies 1QBit founded World s first dedicated quantum computing software company 187 First design of a quantum repeater system without a need for quantum memories 188 Decoherence suppressed for 2 seconds at room temperature by manipulating Carbon 13 atoms with lasers 189 190 Theory of Bell based randomness expansion with reduced assumption of measurement independence 191 New low overhead method for fault tolerant quantum logic developed called lattice surgery 192 2013 Edit Coherence time of 39 minutes at room temperature and 3 hours at cryogenic temperatures demonstrated for an ensemble of impurity spin qubits in isotopically purified silicon 193 Extension of time for qubit maintained in superimposed state for ten times longer than what has ever been achieved before 194 First resource analysis of a large scale quantum algorithm using explicit fault tolerant error correction protocols was developed for factoring 195 2014 Edit Documents leaked by Edward Snowden confirm the Penetrating Hard Targets project 196 by which the National Security Agency seeks to develop a quantum computing capability for cryptography purposes 197 198 199 Researchers in Japan and Austria publish the first large scale quantum computing architecture for a diamond based system 200 Scientists at the University of Innsbruck do quantum computations on a topologically encoded qubit which is encoded in entangled states distributed over seven trapped ion qubits 201 Scientists transfer data by quantum teleportation over a distance of 10 feet 3 048 meters with zero percent error rate a vital step towards a quantum Internet 202 203 2015 Edit Optically addressable nuclear spins in a solid with a six hour coherence time 204 Quantum information encoded by simple electrical pulses 205 Quantum error detection code using a square lattice of four superconducting qubits 206 D Wave Systems Inc announced on June 22 that it had broken the 1 000 qubit barrier 207 A two qubit silicon logic gate is successfully developed 208 A quantum computer along with quantum superposition and entanglement is emulated by a classical analog computer with the result that the fully classical system behaves like a true quantum computer 209 2016 Edit Physicists led by Rainer Blatt joined forces with scientists at MIT led by Isaac Chuang to efficiently implement Shor s algorithm in an ion trap based quantum computer 210 IBM releases the Quantum Experience an online interface to their superconducting systems The system is immediately used to publish new protocols in quantum information processing 211 212 Google using an array of 9 superconducting qubits developed by the Martinis group and UCSB simulates a hydrogen molecule 213 Scientists in Japan and Australia invent the quantum version of a Sneakernet communications system 214 2017 Edit D Wave Systems Inc announces general commercial availability of the D Wave 2000Q quantum annealer which it claims has 2000 qubits 215 Blueprint for a microwave trapped ion quantum computer published 216 IBM unveils 17 qubit quantum computer and a better way of benchmarking it 217 Scientists build a microchip that generates two entangled qudits each with 10 states for 100 dimensions total 218 Microsoft reveals Q a quantum programming language integrated with Visual Studio Programs can be executed locally on a 32 qubit simulator or a 40 qubit simulator on Azure 219 Rubayet Hossain Omi the former intelligent systems advisor of DARPA in collaboration with the researchers of QuAIL develop the world s first user interactive operating system to be used in commercial quantum computers And Intel confirms development of a 17 qubit superconducting test chip 220 IBM reveals a working 50 qubit quantum computer that can maintain its quantum state for 90 microseconds 221 First teleportation using a satellite connecting ground stations over a distance of 1400 km apart 222 Previous experiments was at Earth at shorter distances 2018 Edit MIT scientists report the discovery of a new triple photon form of light 223 224 Oxford researchers successfully use a trapped ion technique where they place two charged atoms in a state of quantum entanglement to speed up logic gates by a factor of 20 to 60 times as compared with the previous best gates translated to 1 6 microseconds long with 99 8 precision 225 QuTech successfully tests a silicon based 2 spin qubit processor 226 Google announces the creation of a 72 qubit quantum chip called Bristlecone 227 achieving a new record Intel begins testing a silicon based spin qubit processor manufactured in the company s D1D Fab in Oregon 228 Intel confirms development of a 49 qubit superconducting test chip called Tangle Lake 229 Japanese researchers demonstrate universal holonomic quantum gates 230 Integrated photonic platform for quantum information with continuous variables 231 On December 17 2018 the company IonQ introduced the first commercial trapped ion quantum computer with a program length of over 60 two qubit gates 11 fully connected qubits 55 addressable pairs one qubit gate error lt 0 03 and two qubit gate error lt 1 0 232 233 On December 21 2018 the National Quantum Initiative Act was signed into law by President Donald Trump establishing the goals and priorities for a 10 year plan to accelerate the development of quantum information science and technology applications in the United States 234 235 236 2019 Edit IBM Q System One 2019 the first circuit based commercial quantum computer See also 2019 in science IBM unveils its first commercial quantum computer the IBM Q System One 237 designed by UK based Map Project Office and Universal Design Studio and manufactured by Goppion 238 Austrian physicists demonstrate self verifying hybrid variational quantum simulation of lattice models in condensed matter and high energy physics using a feedback loop between a classical computer and a quantum co processor 239 Quantum Darwinism observed in diamond at room temperature 240 241 A paper by Google s quantum computer research team was briefly available in late September 2019 claiming the project has reached quantum supremacy 242 243 244 IBM reveals its biggest quantum computer yet consisting of 53 qubits The system goes online in October 2019 245 University of Science and Technology of China researchers demonstrate boson sampling with 14 detected photons 246 2020s Edit2020 Edit See also 2020 in science Timeline of computing 2020 present and 2020 in philosophy UNSW Sydney develops a way of producing hot qubits quantum devices that operate at 1 5 kelvins 247 when Griffith University UNSW and UTS in partnership with seven universities in the United States develop noise cancelling for quantum bits via machine learning taking quantum noise in a quantum chip down to 0 248 249 UNSW performs electric nuclear resonance to control single atoms in electronic devices 250 when University of Tokyo and Australian scientists create and successfully test a solution to the quantum wiring problem creating a 2D structure for qubits Such structure can be built using existing integrated circuit technology and has a considerably lower cross talk 251 when 16 January Quantum physicists report the first direct splitting of one photon into three using spontaneous parametric down conversion and which may have applications in quantum technology 252 253 11 February Quantum engineers report that they have created artificial atoms in silicon quantum dots for quantum computing and that artificial atoms with a higher number of electrons can be more stable qubits than previously thought possible Enabling silicon based quantum computers may make it possible to reuse the manufacturing technology of classical modern day computer chips among other advantages 254 255 14 February Quantum physicists develop a novel single photon source which may allow to bridge semiconductor based quantum computers that use photons by converting the state of an electron spin to the polarisation of a photon They show that they can generate a single photon in a controlled way without the need for randomly formed quantum dots or structural defects in diamonds 256 257 25 February Scientists visualize a quantum measurement by taking snapshots of ion states at different times of measurement via coupling of a trapped ion qutrit to the photon environment they show that the changes of the degrees of superpositions and therefore of probabilities of states after measurement happens gradually under the measurement influence 258 259 2 March Scientists report to have achieved repeated quantum nondemolition measurements of an electron s spin in a silicon quantum dot measurements that don t change the electron s spin in the process 260 261 11 March Quantum engineers report to have managed to control the nucleus of a single atom using only electric fields This was first suggested to be possible in 1961 and may be used for silicon quantum computers that use single atom spins without needing oscillating magnetic fields which may be especially useful for nanodevices for precise sensors of electric and magnetic fields as well as for fundamental inquiries into quantum nature 262 263 19 March A US Army laboratory announces that its scientists analysed a Rydberg sensor s sensitivity to oscillating electric fields over an enormous range of frequencies from 0 to 10 12 Hz the spectrum to 0 3 mm wavelength The Rydberg sensor may potentially be used detect communications signals as it could reliably detect signals over the entire spectrum and compare favourably with other established electric field sensor technologies such as electro optic crystals and dipole antenna coupled passive electronics 264 265 23 March Researchers report that they have found a way to correct for signal loss in a prototype quantum node that can catch store and entangle bits of quantum information Their concepts could be used for key components of quantum repeaters in quantum networks and extend their longest possible range 266 267 15 April Researchers demonstrate a proof of concept silicon quantum processor unit cell which works at 1 5 kelvins many times warmer than common quantum processors that are being developed It may enable integrating classical control electronics with the qubit array and reduce costs substantially The cooling requirements necessary for quantum computing have been called one of the toughest roadblocks in the field 268 269 270 271 16 April Scientists prove the existence of the Rashba effect in bulk perovskites Previously researchers have hypothesized that the materials extraordinary electronic magnetic and optical properties which make it a commonly used material for solar cells and quantum electronics are related to this effect which to date hasn t been proven to be present in the material 272 273 8 May Researchers report to have developed a proof of concept of a quantum radar using quantum entanglement and microwaves which may potentially be useful for the development of improved radar systems security scanners and medical imaging systems 274 275 276 12 May Researchers report to have developed a method to selectively manipulate a layered manganite s correlated electrons spin state while leaving its orbital state intact using femtosecond X ray laser pulses This may indicate that orbitronics using variations in the orientations of orbitals may be used as the basic unit of information in novel IT devices 277 278 19 May Researchers report to have developed the first integrated silicon on chip low noise single photon source compatible with large scale quantum photonics 279 280 281 11 June Scientists report the generation of rubidium Bose Einstein condensates BECs in the Cold Atom Laboratory aboard the International Space Station under microgravity which could enable improved research of BECs and quantum mechanics whose physics are scaled to macroscopic scales in BECs support long term investigations of few body physics support the development of techniques for atom wave interferometry and atom lasers and has verified the successful operation of the laboratory 282 283 284 15 June Scientists report the development of the smallest synthetic molecular motor consisting of 12 atoms and a rotor of 4 atoms shown to be capable of being powered by an electric current using an electron scanning microscope and moving even with very low amounts of energy due to quantum tunneling 285 286 287 17 June Quantum scientists report the development of a system that entangles two photon quantum communication nodes through a microwave cable that can send information inbetween without the photons ever being sent through or occupying the cable On 12 June it was reported that they also for the first time entangled two phonons as well as erase information from their measurement after the measurement has been completed using delayed choice quantum erasure 288 289 290 291 13 August Universal coherence protection is reported to have been achieved in a solid state spin qubit a modification that allows quantum systems to stay operational or coherent for 10 000 times longer than before 292 293 26 August Scientists report that ionizing radiation from environmental radioactive materials and cosmic rays may substantially limit the coherence times of qubits if they aren t shielded adequately 294 295 296 28 August Quantum engineers working for Google report the largest chemical simulation on a quantum computer a Hartree Fock approximation with Sycamore paired with a classical computer that analyzed results to provide new parameters for the 12 qubit system 297 298 299 2 September Researchers present an eight user city scale quantum communication network located in Bristol using already deployed fibres without active switching or trusted nodes 300 301 21 September Researchers report the achievement of quantum entanglement between the motion of a millimetre sized mechanical oscillator and a disparate distant spin system of a cloud of atoms 302 303 3 December Chinese researchers claim to have achieved quantum supremacy using a photonic peak 76 qubit system 43 average known as Jiuzhang which performed calculations at 100 trillion times the speed of classical supercomputers 304 305 306 21 December Publication of research of counterfactual quantum communication whose first achievement was reported in 2017 by which information can be exchanged without any physical particle traveling between observers and without quantum teleportation 307 The research suggests that this is based on some form of relation between the properties of modular angular momentum 308 309 310 2021 Edit 6 January Chinese researchers report that they have built the world s largest integrated quantum communication network combining over 700 optical fibers with two QKD ground to satellite links for a total distance between nodes of the network of networks of up to 4 600 km 311 312 13 January Austrian researchers report the first realization of an entangling gate between two logical qubits encoded in topological quantum error correction codes using a trapped ion quantum computer with 10 ions 313 314 15 January Researchers in China report the successful transmission of entangled photons between drones used as nodes for the development of mobile quantum networks or flexible network extensions marking the first work in which entangled particles were sent between two moving devices 315 316 28 January Swiss and German researchers report the development of a highly efficient single photon source for quantum IT with a system of gated quantum dots in a tunable microcavity which captures photons released from these excited artificial atoms 317 318 5 February Researchers demonstrate a first prototype of quantum logic gates for distributed quantum computers 319 320 13 April In a preprint an astronomer describes for the first time how one could search for quantum communication transmissions sent by extraterrestrial intelligence using existing telescope and receiver technology He also provides arguments for why future searches of SETI should also target interstellar quantum communications 321 322 7 May Two studies complement research published September 2020 see item by quantum entangling two mechanical oscillators 323 324 325 8 June A Japanese tech company achieves quantum communications over optical fibres exceeding 600 km in length a new world record distance 326 327 328 17 June Austrian German and Swiss researchers present a two 19 inch rack quantum computing demonstrator the world s first quality standards meeting compact quantum computer 329 330 7 July American researchers present a programmable quantum simulator that can operate with 256 qubits 331 332 and on the same date and journal another team presented quantum simulator of 196 Rydeberg atoms trapped in optical tweezers 333 25 October Chinese researchers reported that they have developed the world s fastest programmable quantum computers The photon based Jiuzhang 2 is claimed to be able to calculate a task in one millisecond that would otherwise had taken a conventional computer 30 trillion years to complete And Zuchongzhi 2 is a 66 qubit programmable superconducting quantum computer that is claimed to be the current world s fastest quantum computer that can run a calculation task one million times more complex than Google s Sycamore as well as being 10 million times faster 334 335 See also Quantum supremacy Progress in the 21st century 11 November The first simulation of baryons on a quantum computer is reported by University of Waterloo 336 337 16 November IBM claims that it has created a new 127 quantum bit processor IBM Eagle which according to a report is the most powerful quantum processor known According to the report the company has not yet published an academic paper describing its metrics performance or abilities 338 339 2022 Edit 18 January Europe s first quantum annealer with more than 5 000 qubits is launched in Julich Germany 340 24 March The first prototype photonic quantum memristive device for neuromorphic quantum computers and artificial neural networks that is able to produce memristive dynamics on single photon states through a scheme of measurement and classical feedback is invented 341 342 14 April The Quantinuum System Model H1 2 doubled its performance claiming to be the first commercial quantum computer to pass quantum volume 4096 343 22 June The world s first quantum computer integrated circuit is demonstrated 344 345 28 June Physicists report that interstellar quantum communication by other civilizations could be possible and may be advantageous identifying some potential challenges and factors for detecting such They may use for example X ray photons for remotely established quantum communications and quantum teleportation as the communication mode 346 347 15 August Nature Materials publishes the first work showing optical initialization and coherent control of nuclear spin qubits in 2D materials an ultrathin hexagonal boron nitride 348 24 August Nature publishes the first research related to a set of 14 photons entangled with high efficiency and in a defined way 349 26 August Created photon pairs at several different frequencies using optical ultra thin resonant metasurfaces made up of arrays of nanoresonators 350 29 August Researchers generated up to 14 stable photons in an optical resonator nearly half the time and through a scalable and freely programmable source 351 29 August Physicists at the Max Planck Institute entangled 14 photons together starting from an atom of rubidium trapped in an optical cavity that bounces electromagnetic waves around in certain patterns 352 2 September Researchers from The University of Tokyo and other Japanese institutions developed a systematic method that applies optimal control theory GRAPE algorithm to identify the theoretically optimal sequence from among all conceivable quantum operation sequences It is necessary to complete the operations within the time that the coherent quantum state is maintained 353 30 September Researchers at University of New South Wales achieved a coherence time of two milliseconds 100 times higher than the previous benchmark in the same quantum processor 354 See also EditList of companies involved in quantum computing or 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