Generating nonclassical photon states via longitudinal couplings between superconducting qubits and microwave fields
Generating nonclassical photon states via longitudinal couplings between superconducting qubits and microwave fields
Besides the conventional transverse couplings between superconducting qubits (SQs) and electromagnetic fields, there are additional longitudinal couplings when the inversion symmetry of the potential energies of the SQs is broken. We study nonclassical-state generation in a SQ which is driven by a classical field and coupled to a single-mode microwave …