Minimum Renyi and Wehrl entropies at the output of bosonic channels

Details Minimum Renyi and Wehrl entropies at the output of bosonic channels Minimum Renyi and Wehrl entropies at the output of bosonic channels

2004-04-06

arxiv.org/abs/quant-ph/0404037v2

Phys. Rev. A 70, 022328 (2004)

Physics

Quantum Physics

Minimal revision. Accepted for publication on Phys. Rev. A

Scientific paper

10.1103/PhysRevA.70.022328

The minimum Renyi and Wehrl output entropies are found for bosonic channels in which the signal photons are either randomly displaced by a Gaussian distribution (classical-noise channel), or in which they are coupled to a thermal environment through lossy propagation (thermal-noise channel). It is shown that the Renyi output entropies of integer orders z>1 and the output Wehrl entropy are minimized when the channel input is a coherent state.

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