ASYMMETRIC DC SQUID WITH SIDE-CLOSED CAPACITY FOR READING AND RESETTING QUBITS

摘要

A superconducting device comprising: a capacitive device shunting a group of asymmetrical direct current SQUIDs to form a tunable resonator configured to read a quantum state of a qubit, with one asymmetrical direct current SQUID in the group of asymmetrical DC SQUIDs comprises a first Josephson junction and a second Josephson junction, wherein a first critical current of the first Josephson junction is different from a second critical current of the second Josephson junction, and an external magnetic flux, the external magnetic flux on a first value is set and applied to the tunable resonator, wherein a first value of the external magnetic flux causes the tunable resonator to tune to a first frequency and wherein the tuning of the tunable resonator to the first frequency causes an active resetting of the qubit.