Title:
QUANTUM GATE DEVICE, SUPERCONDUCTING QUANTUM GATE DEVICE, QUANTUM COMPUTER, AND QUANTUM GATE OPERATING METHOD
Document Type and Number:
WIPO Patent Application WO/2024/058208
Kind Code:
A1
Abstract:
A quantum gate device 1 comprises: a quantum bit substrate unit 10 on which at least two data quantum bits, namely, a first data quantum bit 11 and a second data quantum bit 12, and a coupler quantum bit 13 disposed between the first data quantum bit 11 and the second data quantum bit 12 are mounted; and a pulse irradiation unit 20 that irradiates the coupler quantum bit 13 with a drive pulse. When the resonance frequency of the first data quantum bit 11 in a first excitation state is ω1, the resonance frequency of the second data quantum bit 12 in the first excitation state is ω2, and the resonance frequency of the coupler quantum bit 13 in the first excitation state is ωc, the pulse irradiation unit 20 irradiates the coupler quantum bit 13 with a first cross-Rabi transition drive pulse defined by the frequency ωc+|ω1-ω2|, and with a residual ZZ interaction-erasing drive pulse of the frequency ωc+|ω1-ω2|-δ that is shifted by a predetermined frequency δ from the first cross-Labi transition drive pulse. The predetermined frequency shift δ is a value that erases a residual ZZ interaction between the first data quantum bit 11 and the second data quantum bit 12.
Inventors:
NOGUCHI ATSUSHI (JP)
SHIRAI SHOTARO (JP)
OKUBO YUTA (JP)
NAKAMURA YASUNOBU (JP)
SHIRAI SHOTARO (JP)
OKUBO YUTA (JP)
NAKAMURA YASUNOBU (JP)
Application Number:
PCT/JP2023/033341
Publication Date:
March 21, 2024
Filing Date:
September 13, 2023
Export Citation:
Assignee:
JAPAN SCIENCE & TECH AGENCY (JP)
International Classes:
G06N10/40; G06F7/38; H10N60/10
Foreign References:
| US20210406746A1 | 2021-12-30 | |||
| US20210408112A1 | 2021-12-30 | |||
| US10924095B1 | 2021-02-16 |
Attorney, Agent or Firm:
MORISHITA Sakaki (JP)
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