公开(公告)号：US20210350268A1

公开(公告)日：2021-11-11

申请号：US17272052

申请日：2019-08-22

Applicant: D-WAVE SYSTEMS INC.

Inventor： Jed D. Whittaker ,  Loren J. Swenson ,  Ilya V. Perminov ,  Abraham J. Evert ,  Peter D. Spear ,  Mark H. Volkmann ,  Catia Baron Aznar ,  Michael S. Babcock

IPC: G06N10/00 ,  G01R33/035 ,  H01L27/18 ,  H03F19/00

Abstract: A superconducting readout system employing a microwave transmission line, and a microwave superconducting resonator communicatively coupled to the microwave transmission line, and including a superconducting quantum interference device (SQUID), may be advantageously calibrated at least in part by measuring a resonant frequency of the microwave superconducting resonator in response to a flux bias applied to the SQUID, measuring a sensitivity of the resonant frequency in response to the flux bias, and selecting an operating frequency and a sensitivity of the microwave superconducting resonator based at least in part on a variation of the resonant frequency as a function of the flux bias. The flux bias may be applied to the SQUID by an interface inductively coupled to the SQUID. Calibration of the superconducting readout system may also include determining at least one of a propagation delay, a microwave transmission line delay, and a microwave transmission line phase offset.

公开(公告)号：US11847534B2

公开(公告)日：2023-12-19

申请号：US17272052

申请日：2019-08-22

Applicant: D-WAVE SYSTEMS INC.

Inventor： Jed D. Whittaker ,  Loren J. Swenson ,  Ilya V. Perminov ,  Abraham J. Evert ,  Peter D. Spear ,  Mark H. Volkmann ,  Catia Baron Aznar ,  Michael S. Babcock

IPC: G06N10/00 ,  G01R33/035 ,  H03F19/00 ,  H10N69/00

CPC classification number: G06N10/00 ,  G01R33/0358 ,  H03F19/00 ,  H10N69/00

Abstract: A superconducting readout system employing a microwave transmission line, and a microwave superconducting resonator communicatively coupled to the microwave transmission line, and including a superconducting quantum interference device (SQUID), may be advantageously calibrated at least in part by measuring a resonant frequency of the microwave superconducting resonator in response to a flux bias applied to the SQUID, measuring a sensitivity of the resonant frequency in response to the flux bias, and selecting an operating frequency and a sensitivity of the microwave superconducting resonator based at least in part on a variation of the resonant frequency as a function of the flux bias. The flux bias may be applied to the SQUID by an interface inductively coupled to the SQUID. Calibration of the superconducting readout system may also include determining at least one of a propagation delay, a microwave transmission line delay, and a microwave transmission line phase offset.