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arxiv: 0906.2762 · v2 · submitted 2009-06-15 · 🪐 quant-ph

Minimum output entropy of Gaussian channels

classification 🪐 quant-ph
keywords gaussianchannelschannelentropylinearminimumoutputadditive
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We show that the minimum output entropy for all single-mode Gaussian channels is additive and is attained for Gaussian inputs. This allows the derivation of the channel capacity for a number of Gaussian channels, including that of the channel with linear loss, thermal noise, and linear amplification.

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