One-step implementation of a multiqubit controlled-phase gate with superconducting quantum interference devices coupled to a resonator

Abstract

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.

©2012 Optical Society of America

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