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References & Citations

Quantum Physics

Title:Classical capacity of Gaussian thermal memory channels

Abstract: The classical capacity of phase-invariant Gaussian channels has been recently determined under the assumption that such channels are memoryless. In this work we generalize this result by deriving the classical capacity of a model of quantum memory channel, in which the output states depend on the previous input states. In particular we extend the analysis of [C. Lupo, et al., PRL and PRA (2010)] from quantum limited channels to thermal attenuators and thermal amplifiers. Our result applies in many situations in which the physical communication channel is affected by nonzero memory and by thermal noise.
Comments: 14 pages, 8 figures
Subjects: Quantum Physics (quant-ph)
Journal reference: Physical Review A 90, 042312 (2014)
DOI: 10.1103/PhysRevA.90.042312
Cite as: arXiv:1404.1767 [quant-ph]
  (or arXiv:1404.1767v2 [quant-ph] for this version)

Submission history

From: Giacomo De Palma [view email]
[v1] Mon, 7 Apr 2014 12:41:04 UTC (1,157 KB)
[v2] Thu, 16 Oct 2014 16:36:15 UTC (1,245 KB)