Superconducting Qubit with Purcell Protection and Tunable Coupling
Superconducting Qubit with Purcell Protection and Tunable Coupling
We present a superconducting qubit for the circuit quantum electrodynamics architecture that has a tunable qubit-resonator coupling strength g. This coupling can be tuned from zero to values that are comparable with other superconducting qubits. At g = 0, the qubit is in a decoherence-free subspace with respect to spontaneous …