Hybrid Quantum Interferometer in Bifurcation Mode as a Latching Quantum Readout

Published 21 Jul 2020 in cond-mat.mes-hall, physics.app-ph, and quant-ph | (2007.11125v1)

Abstract: We have developed a new type of magnetometer consisting of a Hybrid Quantum Interference Device (HyQUID) that is set in a bi-stable state. We demonstrate its operation in a latching mode that can be employed to measure small changes in the applied flux. The device can be used to probe the flux state of a superconducting circuit using straightforward electrical resistance measurements, making it suitable as a simple qubit readout with low back-action.

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