Minimum output entropy of bosonic channels: a conjecture

Preprint

1 April 2004

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.quant-ph/0404005

Abstract

The von Neumann entropy at the output of a bosonic channel with thermal noise is analyzed. Coherent-state inputs are conjectured to minimize this output entropy. Physical and mathematical evidence in support of the conjecture is provided. A stronger conjecture--that output states resulting from coherent-state inputs majorize the output states from other inputs--is also discussed.

Keywords

VON NEUMANN ENTROPY
BOSONIC CHANNEL
MINIMUM OUTPUT
COHERENT STATE
OUTPUT ENTROPY
OUTPUT STATES
CONJECTURE
SUPPORT

All Related Versions

Version 1, 2004-04-01, ArXiv
Published version: Physical Review A, 70 (3), 032315.

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