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Decoherence caused by transient linear amplifiers

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Abstract

Decoherence of nonclassical properties is studied for a photon system interacting with a transient environment which changes from a linear attenuator to amplifier during the time evolution. The sufficient condition for quadrature squeezing, sub-Poissonian photon statistics and entanglement to be completely destructed during the time-evolution is derived. The results are compared with those obtained for another model of the transient linear amplifier. Furthermore the decoherence caused by a environment which switches a linear amplifier to attenuator is also investigated.

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Ban, M. Decoherence caused by transient linear amplifiers. Eur. Phys. J. D 49, 147–155 (2008). https://doi.org/10.1140/epjd/e2008-00147-6

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  • DOI: https://doi.org/10.1140/epjd/e2008-00147-6

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