Characteristic Time and Maximum Mixedness: Single Mode Gaussian States in Dissipative Channels

Details Characteristic Time and Maximum Mixedness: Single Mode Gaussian States in Dissipative Channels Characteristic Time and Maximum Mixedness: Single Mode Gaussian States in Dissipative Channels

2007-06-28

arxiv.org/abs/0706.4271v5

Physics Letters A, 372 (2008) 3616.

Physics

Quantum Physics

Accepted version

Scientific paper

10.1016/j.physleta.2008.02.040

We derive an upper limit for the mixedness of single bosonic mode gaussian
states propagating in dissipative channels. It is a function of the initial
squeezing and temperature of the channel only. Moreover the time at which von
Neumann's entropy reaches its maximum value coincides with that of complete
loss of coherence, thus defining a quantum-classical transition.

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