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Entangled entanglement in Raman lasers

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Abstract

We show that entangled entanglement can be obtained from a multimode Raman laser. In this system, all lasing modes constitute a quantum-beat. Equivalently, one collective mode is operated well above threshold and exhibits the sub-Poissonian statistics, while other orthonormal collective modes are excluded from the interacting system and stay in vacuum states. This determines entanglement between any two sub-collections, in each of which exists entanglement between any two sub-sub-collections, and so on, if present. This scheme is accessible based on the recent experimental progress in Raman lasers.

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  1. Department of Physics, Huazhong Normal University, Wuhan, 430079, P.R. China

    X. X. Li & X. M. Hu

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  1. X. X. Li
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Li, X.X., Hu, X.M. Entangled entanglement in Raman lasers. Eur. Phys. J. D 62, 245–253 (2011). https://doi.org/10.1140/epjd/e2010-09661-x

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