Fig. 3: Time evolution of a coherent state in the SNAIL-terminated resonator.
From: Fast generation of Schrödinger cat states using a Kerr-tunable superconducting resonator
a The pulse sequence where the pulse width of displacement is 30ns, and the time between two displacement pulses is Δt. The experimental Wigner tomography shows the evolution progress of the coherent states at different time durations as shown in b–d at the Kerr-free point and e–g with K/2π ≈ 0.5MHz where the Kerr effect clearly distorts the state.
