Decoherence and entanglement in two-mode squeezed vacuum states
- 16 January 2001
- journal article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 63 (2)
- https://doi.org/10.1103/physreva.63.022305
Abstract
I investigate the decoherence of two-mode squeezed vacuum states by analyzing the relative entropy of entanglement. I consider two sources of decoherence: (i) the phase damping and (ii) the amplitude damping due to the coupling to the thermal environment. In particular, I give the exact value of the relative entropy of entanglement for the phase damping model. For the amplitude damping model, I give an upper bound for the relative entropy of entanglement, which turns out to be a good approximation for the entanglement measure in usual experimental situations.Comment: 5 pages, RevTex, 3 eps figureKeywords
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