Fig. 2.

Initialization, bit-flip times, and phase-flip times. (A) The sequence for detuned-KCQ initialization. (B) The evolution of the potential profiles and wave-functions during the initialization. (C) The numerical simulation of the detuned-KCQ state population transfer during the initialization. (D) The bit-flip time $T_z$ of resonant-KCQ and detuned-KCQ as a function of mean photon numbers. (E) The phase-flip time $T_y$ of resonant-KCQ and detuned-KCQ. The error bars are from fitting uncertainty, and the theory predictions of the bit-flip times are calculated by master-equation simulations illustrated in refs. 33 and 39 and Materials and Methods.