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SUPERCONDUCTING COMPOUND QUANTUM COMPUTING CIRCUIT NEW

外国特許コード F200010263
整理番号 E128P04WO
掲載日 2020年11月9日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2019IB059335
国際公開番号 WO2020075150
国際出願日 令和元年10月31日(2019.10.31)
国際公開日 令和2年4月16日(2020.4.16)
優先権データ
  • 特願2018-191287 (2018.10.9) JP
発明の名称 (英語) SUPERCONDUCTING COMPOUND QUANTUM COMPUTING CIRCUIT NEW
発明の概要(英語) This superconducting compound quantum computing circuit comprises: a circuit board in which a wiring pattern of circuit elements, which includes quantum bits and observation electrodes for observing the states of the quantum bits, and a ground pattern, which is a ground potential, are formed on a circuit board surface, said circuit board being provided with through-electrodes that connect, within the circuit board, a ground pattern formed on a first surface among the surfaces of the circuit board and a ground pattern formed on a second surface, which is the rear surface of the first surface; first ground electrodes provided with first contact portions that are in contact with the ground pattern formed on the first surface of the circuit board, and first non-contact portions having a shape corresponding to the shape of the wiring pattern formed on the first surface; second ground electrodes provided with second contact portions that are in contact with the ground pattern formed on the second surface of the circuit board; control signal wiring that provides contact spring pins at the tip, said pins being in contact at position corresponding to the quantum bits so as to press the first surface of the circuit board against the first ground electrodes, or press the second surface of the circuit board against the second ground electrodes; and biasing members that press the first ground electrodes against the first surface of the circuit board, or press the second ground electrodes against the second surface of the circuit board. The first ground electrodes are in contact with the ground pattern via first extension portions that are formed by superconductor bodies having higher extensibility than the extensibility of the ground pattern. The second ground electrodes are in contact with the ground pattern via second extension portions that are formed by superconductor bodies having higher extensibility than the extensibility of the ground pattern.
従来技術、競合技術の概要(英語) BACKGROUND ART
Researches and development of a quantum computer has been performed. In the art for a quantum computer, quantum computer using superconducting qubit in the quantum-bit gate operation 2 has been known a method (Patent Document 1, reference 2).
特許請求の範囲(英語) [claim1]
1. The state of the qubit and the quantum bit that observes the electrode and the wiring pattern of the circuit element, the ground potential and a ground pattern formed on the surface of the substrate, wherein a first one of the surface of the substrate 1 and the ground pattern formed on the image plane, the back surface of the first 2 1 formed on the surface of the first ground pattern and the through electrodes are connected to the inside of the substrate and comprising a circuit board in, wherein the first circuit board 1 formed in the surface is in contact with the contact portion and the second ground pattern 1, 1 formed on the surface of the first shape conforming to the shape of the wiring pattern of the non-contact portion and a second 1 1 the first electrode and the ground electrode, formed on the surface of the circuit board 2 wherein the first ground pattern and a second line tangent to the first contact portion and the ground electrode 2 to 2, wherein the contact at a position corresponding to a quantum bit, wherein the first surface of the circuit board 1 1 against the first ground electrode, or, the first surface of the circuit board 2 to 2 wherein the first ground electrode to the tip of the pin against the spring contact and the control signal line, the first ground electrode 1 of the circuit board against the first surface 1, or, 2 wherein the first ground electrode against the surface of the circuit board 2 and the second biasing member, and, wherein the first ground electrode is 1, the ground pattern has a spread of malleability greater than that in the superconductor formed by the first spread portion via the 1 in contact with the ground pattern, the second ground electrode is 2, the ground pattern has a spread of malleability greater than that in the superconductor formed by the first spread portion via 2 is in contact with the ground pattern, the superconducting composite quantum computation circuit.

[claim2]
2. Wherein the qubit, the ground contact portion 1 and the second coupling capacitor having a first electrode of the 1, 1 and the ground part of the first coupling capacitance is greater than the first coupling capacitance and 2, and 1 wherein the first electrode of the Josephson junction by 2 connected to the first electrode and the superconducting composite quantum computing circuit according to claim 1.

[claim3]
3. Wherein the circuit board, wherein the first wiring pattern formed on the surface of 1 included in the first quantum bit corresponding to the position of the position of the 2 surface at a corresponding position of the quantum bit, a core electrode and, surrounding the central portion and surrounding the periphery of the electrode, and surrounding the central electrode and the connection electrode and a superconducting composite quantum computing circuit according to claim 2.

[claim4]
4. The method of claim 1 wherein the first control signal line is formed on the surface of the wiring pattern corresponding to the position of a quantum bit included in the first position to said first ground electrode 1 has a non-contact portion in the interior of the 1, or, wherein the first wiring pattern formed on the surface of 1 included in the first quantum bit corresponding to the position of the position of the 2 surface at a position corresponding to the position of the quantum bit corresponding to the first ground electrode is a non-contact portion 2 2 having internal, disposed to, wherein the quantum bit of claim 1 control signal from any one of claims claim 3 superconducting composite quantum computation circuit.

[claim5]
5. 1 The non-contact portion and the second width and the height of the non-contact portion 2 is smaller than the wavelength of the control signal according to claim 4 in superconducting composite quantum computation circuit.

[claim6]
6. Wherein the control signal according to claim 5 microwave band frequency band of the superconducting composite quantum computation circuit.
  • 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)
  • NAKAMURA, Yasunobu
  • TABUCHI, Yutaka
  • TAMATE, Shuhei
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 JO 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
参考情報 (研究プロジェクト等) ERATO NAKAMURA Macroscopic Quantum Machines AREA
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