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QUANTUM COMPUTING SYSTEM AND USE METHOD FOR QUANTUM COMPUTING SYSTEM

外国特許コード F200010153
整理番号 (S2018-0716-N0)
掲載日 2020年6月2日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2019JP018010
国際公開番号 WO 2019216278
国際出願日 平成31年4月26日(2019.4.26)
国際公開日 令和元年11月14日(2019.11.14)
優先権データ
  • 特願2018-090547 (2018.5.9) JP
  • 特願2018-131507 (2018.7.11) JP
  • 特願2018-148870 (2018.8.7) JP
発明の名称 (英語) QUANTUM COMPUTING SYSTEM AND USE METHOD FOR QUANTUM COMPUTING SYSTEM
発明の概要(英語) This quantum computing system is provided with a plurality of basic structures configured to include: a first quantum bit group comprising first quantum bits that are arranged in one column and not connected to each other; a second quantum bit group comprising second quantum bits that are arranged in one column, said second quantum bits being connected to the second quantum bits adjacent thereto and connected to a first quantum bit arranged in the same row; and a third quantum bit connected with all of the second quantum bits. The plurality of basic structures are arranged in one column, and said quantum computing system is provided with a quantum computing circuit obtained by connecting the third quantum bits of adjacent basic structures. In the resulting quantum computing circuit configuration, a two-dimensional cluster state or a three-dimensional cluster state is achieved using control wiring on a two-dimensional plane, or surface code is achieved using a quasi-two-dimensional superconducting circuit.
従来技術、競合技術の概要(英語) BACKGROUND ART
Since the actual noise of the quantum system, in order to perform quantum computing requires quantum error correction. Quantum error correction is performed as one method 1 is used as a reference surface (surface code, toric code) (A. Y. Kitaev, "Fault-tolerant quantum computation by anyons,"Annals of Physics 303, 2 (2003). ) known. Particularly most research has progressed in the superconducting quantum circuit, the surface of the partial code has already been implemented (J. M. Chow et al., "Implementing a strand of a scalable fault-tolerant quantum computing fabric,"Nature Communications 5, 4015 (2014). ,J. Kelly et al., "State preservation by repetitive error detection in a superconducting quantum circuit,"Nature 519, 66 (2015). ,A. D. Corcoles et al., "Demonstration of a quantum error detection code using a square lattice of four superconducting qubits,"Nature Communications 6, 6979 (2015). ).
As the surface of the quantum error correction method other than a code, a two-dimensional cluster state 3 the special state referred to as a quantum calculation is performed using the one-way quantum computation is a topological (topological one-way quantum computation) (R. Raussendorf, J. Harrington, "Fault-Tolerant Quantum Computation with High Threshold in Two Dimensions,"Physical Review Letters 98, 190504 (2007). ). The cluster state having a 2-body interaction does not occur as the ground state of the physical systems, the generation method is problematic (M. A. Nielsen, "Cluster-state quantum computation,"Reports on Mathematical Physics 57, 147 (2006). ). As a method of generating a cluster state, the two-dimensional cluster state 2 and 1 for two-dimensional cluster state, the quantum dot clusters in a system using a technique called state machine gun (cluster state machine gun) (N. H. Lindner, T. Rudolph, "Proposal for Pulsed On-Demand Sources of Photonic Cluster State Strings,"Physical Review Letters 103, 113602 (2009). ,S. E. Economou, N. Lindner, T. Rudolph, "Optically Generated 2-Dimensional Photonic Cluster State from Coupled Quantum Dots,"Physical Review Letters 105, 093601 (2010). ) have been proposed.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • TOKYO UNIVERSITY OF SCIENCE FOUNDATION
  • 発明者(英語)
  • TSAI JAW SHEN
  • MUKAI HIROTO
  • SAKATA KEIICHI
国際特許分類(IPC)
  • G06N010/00
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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