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Acta Physica Sinica (Overseas Edition)

Generation of entangled Fock states of two nonlocal cavity modes with different frequencies

Guo Guang-Can, Zheng Shi-Biao

Published Apr 1, 1997• 0 citations
Publisher

Abstract

We present a method to generate entangled Fock states of two nonlocal cavity modes with different frequencies. We send an atom with three levels g, e , and f across two cavities. The atomic transition frequency between level g and e is resonant with the first cavity frequency, while the atomic transition frequency between level g and f is resonant with the second cavity frequency. The detection of the atomic state leaves the pure field in an entangled Fock state.

DOI
10.1088/1004-423x/6/4/006

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We present a method to generate entangled Fock states of two nonlocal cavity modes with different frequencies. We send an atom with three levels g, e , and f across two cavities. The atomic transition frequency between level g and e is resonant with the first cavity frequency, while the atomic transition frequency between level g and f is resonant with the second cavity frequency. The detection of the atomic state leaves the pure field in an entangled Fock state.
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A scheme is proposed for generating entangled W states with four cavity modes. In this scheme, we send a V-type three-level atom through two identical two-mode cavities in succession. After the atom exits from the second cavity, the four cavity modes are prepared in the W state. On the other hand we can obtain three-atom W states by sending three V-type three-level atoms through a two-mode cavity in turn. The present scheme does not require conditional measurement, and it is easily generalized to preparing 2n-mode W states and n-atom W states.