Classical capacity of the lossy bosonic channel: the exact solution

Classical capacity of the lossy bosonic channel: the exact solution

The classical capacity of the lossy bosonic channel is calculated exactly. It is shown that its Holevo information is not superadditive, and that a coherent-state encoding achieves capacity. The capacity of far-field, free-space optical communications is given as an example.

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Veröffentlicht in:Physical review letters 2004-01, Vol.92 (2), p.027902-027902, Article 027902
Hauptverfasser: Giovannetti, V, Guha, S, Lloyd, S, Maccone, L, Shapiro, J H, Yuen, H P
Format: Artikel
Sprache:eng
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Zusammenfassung:The classical capacity of the lossy bosonic channel is calculated exactly. It is shown that its Holevo information is not superadditive, and that a coherent-state encoding achieves capacity. The capacity of far-field, free-space optical communications is given as an example.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.92.027902