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Journal of Optics B Quantum and Semiclassical Optics

The generation of multi-atom entanglement via the detection of cavity decay

Boyang Yu, Zhi‐Yuan Zhou, Guang-Can Guo

Published Nov 7, 2003• 13 citations
Publisher

Abstract

We propose a scheme to generate entangled states of multi-Λ-type three-level atoms in a cavity. It is shown how multi-atom Dicke states can be prepared simply by detecting the photon decays from the cavity. The analytic form of the approximate efficiency of the scheme is obtained. With this analytic form investigated, we provide an active way to achieve high efficiency.

DOI
10.1088/1464-4266/6/1/014

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Communications in Theoretical Physics•Apr 1, 2007•0 citations
We propose a scheme to generate entangled states of multi-Λ-type three-level atoms in a cavity. It is shown how multi-atom Dicke states can be prepared simply by detecting the photon decays from the cavity. The analytic form of the approximate efficiency of the scheme is obtained. With this analytic form investigated, we provide an active way to achieve high efficiency.
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We present a scheme to create quantum entanglement between multi-atom Dicke states and two cavity modes by passing N three-level atoms in Λ configuration through a resonant two-mode cavity one by one. We further show that such a scheme can be used to generate arbitrary two-mode N-photon entangled states, arbitrary superposition of Dicke states, and a maximal entangled state of Dicke states. These states may find applications in the demonstration of quantum non-locality, high-precision spectroscopy and quantum information processing.