One-step implementation of a multiqubit controlled-phase gate with superconducting quantum interference devices coupled to a resonator
Y. Q. Zhang, Shou Zhang, Kyu Hwang Yeon, S. C. Yu · Journal of the Optical Society of America B · 2012
A scheme for one-step implementation of an n-qubit controlled-phase gate is proposed in a superconducting quantum interference device (SQUID) system. The distinguishing feature of this scheme is the simultaneous and nonidentical off-resonant Raman coupling of the n SQUID qubits to a single-mode resonator and the microwave pulses. The scheme is efficient and simple because it requires only one-step evolution, and no adjustments of the experimental parameters are needed during the operation.