The Entropy Photon-Number Inequality and its Consequences

Details The Entropy Photon-Number Inequality and its Consequences The Entropy Photon-Number Inequality and its Consequences

2007-10-30

arxiv.org/abs/0710.5666v2

Physics

Quantum Physics

3 pages, submitted to "Open Problems Session, ITA 2008, UCSD"

Scientific paper

Determining the ultimate classical information carrying capacity of electromagnetic waves requires quantum-mechanical analysis to properly account for the bosonic nature of these waves. Recent work has established capacity theorems for bosonic single-user, broadcast, and wiretap channels, under the presumption of two minimum output entropy conjectures. Despite considerable accumulated evidence that supports the validity of these conjectures, they have yet to be proven. Here we show that the preceding minimum output entropy conjectures are simple consequences of an Entropy Photon-Number Inequality, which is a conjectured quantum-mechanical analog of the Entropy Power Inequality (EPI) from classical information theory.

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