Physics – Quantum Physics
Scientific paper
2005-08-28
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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