Sending Quantum Information with Gaussian States

Details Sending Quantum Information with Gaussian States Sending Quantum Information with Gaussian States

1998-09-10

arxiv.org/abs/quant-ph/9809022v1

Physics

Quantum Physics

11 pages, Latex, 2 eps figures. To appear in Proceedings of the 4th International Conference on Quantum Communication, Measure

Scientific paper

Quantum information characteristics, such as quantum mutual information,
loss, noise and coherent information are explicitly calculated for Bosonic
attenuation/amplification channel with input Gaussian state. The coherent
information is shown to be negative for the values of the attenuation
coefficient $k<1/\sqrt{2}$.

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