dorsal/arxiv
View SchemaA quantum channel with additive minimum output entropy
| Authors | Nilanjana Datta, Alexander S. Holevo, Yuri M. Suhov |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0403072 |
| URL | https://arxiv.org/abs/quant-ph/0403072 |
Abstract
We give a direct proof of the additivity of the minimum output entropy of a particular quantum channel which breaks the multiplicativity conjecture. This yields additivity of the classical capacity of this channel, a result obtained by a different method by Matsumoto and Yura [quant-ph/0306009]. Our proof relies heavily upon certain concavity properties of the output entropy which are of independent interest.
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"abstract": "We give a direct proof of the additivity of the minimum output entropy of a\nparticular quantum channel which breaks the multiplicativity conjecture. This\nyields additivity of the classical capacity of this channel, a result obtained\nby a different method by Matsumoto and Yura [quant-ph/0306009]. Our proof\nrelies heavily upon certain concavity properties of the output entropy which\nare of independent interest.",
"arxiv_id": "quant-ph/0403072",
"authors": [
"Nilanjana Datta",
"Alexander S. Holevo",
"Yuri M. Suhov"
],
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"quant-ph"
],
"title": "A quantum channel with additive minimum output entropy",
"url": "https://arxiv.org/abs/quant-ph/0403072"
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