Conditional quantum controlled-phase gate between distant atoms in optical cavities

Abstract

Abstract:

A scheme to implement a quantum controlled-phase gate between two four-level atoms inside the different optical cavities is proposed. The scheme combine the advantage of scalability from the photon and the power of strong atom-photon coupling, which yields the desired unitary evolution operation. The scheme is immune to decoherence due to cavity photon decay and atomic spontaneous emission.Thus,the operation is implemented probabilistically with a very high fidelity.

Key words: quantum optics, controlled-phase gate, cavity QED, decoherence

FAN Yang, LI Dingguo. Conditional quantum controlled-phase gate between distant atoms in optical cavities[J]. J4, 2010, 27(5): 554-557.

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