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Contractive Entanglement in Squeezed State Evolution

R. W. Rendell·A. K. Rajagopal
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Abstract

The position variance of a single-mode Yuen states can go below the standard quantum limit. For two-mode squeezed states, it is shown that the time-dependent evolution of the entanglement of formation can be contractive, going below that of the squeezed state with minimum Einstein-Podolsky-Rosen dispersions, and increasing thereafter. The rate of change of the Einstein-Podolsky-Rosen dispersions as a function of the two-mode phases control this process. Contractive entanglement is shown to be equivalent to a rotating phase space accompanied by time-dependent single-mode squeezing.

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R. W. Rendell, A. K. Rajagopal. 2004-08-06. Contractive Entanglement in Squeezed State Evolution. https://arxiv.org/abs/quant-ph/0408053

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