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MICROWAVE PHOTON CONTROL DEVICE, MICROWAVE PHOTON TRANSMITTER, MICROWAVE PHOTON RECEIVER, MICROWAVE PHOTON REPEATER, AND QUANTUM COMPUTER NEW

外国特許コード F210010594
整理番号 E128P12WO
掲載日 2021年11月4日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2020JP049180
国際公開番号 WO 2021140995
国際出願日 令和2年12月28日(2020.12.28)
国際公開日 令和3年7月15日(2021.7.15)
優先権データ
  • 特願2020-001696 (2020.1.8) JP
発明の名称 (英語) MICROWAVE PHOTON CONTROL DEVICE, MICROWAVE PHOTON TRANSMITTER, MICROWAVE PHOTON RECEIVER, MICROWAVE PHOTON REPEATER, AND QUANTUM COMPUTER NEW
発明の概要(英語) Provided is a microwave photon control device that includes: a first quantum bit and a second quantum bit that are respectively connected in parallel to a waveguide through which microwave photons are propagated; and a direct coupling between the first quantum bit and the second quantum bit. The interval between the first quantum bit and the second quantum bit is (1/4+n/2) times the microwave-photon wavelength (wherein n is an integer that is equal to or greater than 0). Quantum entanglement is formed between the first quantum bit and the second quantum bit. The direct coupling cancels out coupling between the first quantum bit and the second quantum bit via the waveguide. As a result of the relaxation rates of the first quantum bit and the second quantum bit and the phase of the quantum entanglement being controlled, a first operation mode, a second operation mode, and a third operation mode are implemented by switching among said operation modes.
従来技術、競合技術の概要(英語) BACKGROUND ART
Techniques have been proposed in which a quantum network is formed by connecting chips on which qubits are mounted to each other using propagation of microwave photons (photons having energy in the microwave range of a wavelength of several cm) (for example, see NpL 1 and NpL 2).
  • 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
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
  • 発明者(英語)
  • KONO Shingo
  • NAKAMURA Yasunobu
国際特許分類(IPC)
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 IT 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 ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN WS 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
参考情報 (研究プロジェクト等) ERATO NAKAMURA Macroscopic Quantum Machines AREA
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