D-wave Systems Inc.

Michael S Babcock

Mark H Volkmann

Jed D Whittaker

Loren J Swenson

Peter D Spear

Ilya V Perminov

Abraham J Evert

Catia Baron Aznar

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.

Systems and methods for operation of a frequency multiplexed resonator input and/or output for a superconducting device

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Maple Ridge, Canada

Michael S Babcock