Fig. 3: Dynamics and stationary state of the KPO.
From: Stabilization of Kerr-cat qubits with quantum circuit refrigerator
A Schedule of the QCR and relevant inter-level transitions when the QCR is off (left) and on (right). B Time dependence of the population of energy levels Pi and C the population of the qubit states P0 + P1, for κ/2π = 1.6 kHz and γp/2π = 0.8 kHz. The values of κ and γp are comparable to the ones measured for flux-tunable superconducting qubits58,59. D Population of the qubit states of the stationary state as a function of V for κ = 2γp. Insets are the Husimi Q function of the stationary states for γp/2π = 0.8 kHz. The other parameters used are the same as in Fig. 2.
