The European Physical Journal D

, Volume 56, Issue 2, pp 247–254 | Cite as

Generation of fully three-mode continuous-variable entanglement in a single-atom laser

Quantum Optics

Abstract

We proposed a scheme for generating fully three-mode continuous-variable (CV) entanglement between three nondegenerate cavity modes in a single-atom laser. In our scheme, the single-atom laser consists of a four-level atom inside a triply resonant cavity, and the atomic coherence is induced by two classical laser fields driving the corresponding atomic transitions. To demonstrate the generation of entanglement, we numerically simulated the dynamics of this system, and the numerical simulation shows that the single-atom laser considered here can be seen as a three-mode CV entanglement amplifier even in the presence of cavity losses. Moreover, we also show that the generation of entanglement doesn’t depend intensively on the initial condition of cavity field, and the fully three-mode CV entanglement can be realized no matter the three entangled (nondegenerate) modes are initially in the same state or different states based on our scheme.

Keywords

Coherent State Cavity Mode Photon Number Resonant Cavity Braunstein 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  1. 1.School of Physics and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and TechnologyWuhanP.R. China

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