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Entanglement generation with deformed Barut-Girardello coherent states as input states in an unitary beam splitter

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Abstract

Using linear entropy as a measure of entanglement, we investigate the entanglement generated via a beam splitter using deformed Barut-Girardello coherent states. We show that the degree of entanglement depends strongly on the q-deformation parameter and amplitude Z of the states. We compute the Mandel Q parameter to examine the quantum statistical properties of these coherent states and make a comparison with the Glauber coherent states. It is shown that these states are useful in describing the states of real and ideal lasers by a proper choice of their characterizing parameters, using an alteration of the Holstein-Primakoff realization.

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Authors and Affiliations

  1. Laboratoire de Physique Théorique, Faculté des Sciences, Université Mohammed V-Agdal, Av. Ibn Battouta, B.P. 1014, Agdal Rabat, Morocco

    K. Berrada & Y. Hassouni

  2. The Abdus Salam International Centre for Theoretical Physics, Trieste, Italy

    K. Berrada

  3. Department of Physics and Astronomy, Lehman College, The City University of New York, Bronx, NY, 10468-1589, USA

    A. Benmoussa

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  1. K. Berrada
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Berrada, K., Benmoussa, A. & Hassouni, Y. Entanglement generation with deformed Barut-Girardello coherent states as input states in an unitary beam splitter. Quantum Inf Process 10, 575–588 (2011). https://doi.org/10.1007/s11128-010-0215-9

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