Simultaneous amplitude and phase damping of a kind of Gaussian states and their separability

Details Simultaneous amplitude and phase damping of a kind of Gaussian states and their separability Simultaneous amplitude and phase damping of a kind of Gaussian states and their separability

2005-08-28

arxiv.org/abs/quant-ph/0508209v2

Phys. Rev. A, 73, 022307 (2006)

Physics

Quantum Physics

7 pages, 1 figure

Scientific paper

10.1103/PhysRevA.73.022307

We give out the time evolution solution of simultaneous amplitude and phase damping for any continuous variable state. For the simultaneous amplitude and phase damping of a wide class of two- mode entangled Gaussian states, two analytical conditions of the separability are given. One is the sufficient condition of separability. The other is the condition of PPT separability where the Peres-Horodecki criterion is applied. Between the two conditions there may exist bound entanglement. The simplest example is the simultaneous amplitude and phase damping of a two-mode squeezed vacuum state. The damped state is non-Gaussian.

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