Suppression of photon shot noise dephasing in a tunable coupling superconducting qubit
Suppression of photon shot noise dephasing in a tunable coupling superconducting qubit
We demonstrate the suppression of photon shot noise dephasing in a superconducting qubit by eliminating its dispersive coupling to the readout cavity. This is achieved in a tunable coupling qubit, where the qubit frequency and coupling rate can be controlled independently. We observe that the coherence time approaches twice the …