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Preparation of two-qubit steady entanglement through driving a single qubit

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Abstract

Inspired by a recent paper [J. Phys. B 47, 055502 (2014) [CrossRef]  ], we propose a simplified scheme to generate and stabilize a Bell state of two qubits coupled to a resonator. In the scheme only one qubit is needed to be driven by external classical fields, and the entanglement dynamics is independent of the phases of these fields and insensitive to their amplitude fluctuations. This is a distinct advantage as compared with the previous ones that require each qubit to be addressed by well-controlled classical fields. Numerical simulation shows that the steady singlet state with high fidelity can be obtained with currently available techniques in circuit quantum electrodynamics.

© 2014 Optical Society of America

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