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Fuzhou daxue xuebao. Ziran kexue ban

Preparation of entangled coherent states by a driven atom

Chen Mei-Feng

Published Jan 1, 2006• 0 citations
OpenAlex

Abstract

A scheme is proposed for the generation of multi-mode entangled coherent states through the interaction of a multi-mode cavity field with an atom driven by a classical field.By adjusting the transition frenqucy of the atom,the atom interacts with the classical field and the multi-mode cavity field alternately.After the measurement of the state of the atom,the multi-mode cavity field evolves into a multi-mode entangled coherent state.

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This paper proposes a scheme for the generation of entangled coherent states for two cavity modes. In the scheme a V-type three-level atom is sent through a two-mode cavity filled with a coherent field. After the atom–cavity interaction and detection of the atomic state the cavity modes may evolve to a superposition of two-mode coherent states. As the scheme is based on resonant atom–cavity interaction, the required interaction time is short, which is important in view of the decoherence. Moreover, additional classical pulses are unnecessary before and after the atom–cavity interaction.