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NONLINEAR MICROWAVE FILTER

Foreign code F200010261
File No. E128P05WO
Posted date Nov 9, 2020
Country WIPO
International application number 2019JP045772
International publication number WO2020105732
Date of international filing Nov 22, 2019
Date of international publication May 28, 2020
Priority data
  • P2018-219739 (Nov 22, 2018) JP
Title NONLINEAR MICROWAVE FILTER
Abstract This nonlinear microwave filter is provided with quantum bits that are formed on a circuit board in which target quantum bits are formed which are quantum bits controlled in a superconducting quantum circuit, and that are coupled to a control waveguide to which the target quantum bis are coupled, wherein the distance to a waveguide end in the control waveguide is within a predetermined range from semi integer times the resonant wavelength, the quantum bits have a resonant frequency in which the difference from the resonant frequency of the target quantum bits is within a predetermined range, and the coupling to the control waveguide is stronger by a predetermined value than the coupling between the target quantum bits and the control waveguide.
Outline of related art and contending technology 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).
Scope of claims (In Japanese)[請求項1]
 超伝導量子回路において制御される量子ビットである標的量子ビットが形成される回路基板に形成されて、前記標的量子ビットが結合する制御用導波路に結合する量子ビットであり、
 前記制御用導波路における導波路端との距離が共鳴波長の半整数倍から所定の範囲内であり、
 前記標的量子ビットの共鳴周波数との差が所定の範囲内である共鳴周波数をもち、
 前記制御用導波路との結合が、前記標的量子ビットと前記制御用導波路との結合に比べて所定の値だけ大きい、
 量子ビットを備える、
 非線形マイクロ波フィルタ。

[請求項2]
 前記標的量子ビットは前記導波路端に位置する
 請求項1に記載の非線形マイクロ波フィルタ。

[請求項3]
 前記回路基板の基板表面のうち前記標的量子ビットが形成される基板表面の裏面に形成される量子ビットである
 請求項1または請求項2に記載の非線形マイクロ波フィルタ。
  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
  • Inventor
  • NAKAMURA Yasunobu
  • KONO Shingo
  • KOSHINO Kazuki
IPC(International Patent Classification)
Reference ( R and D project ) ERATO NAKAMURA Macroscopic Quantum Machines AREA
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