Properties of Cutoff Rate for Photon Channels

Osamu HIROTA  Kouichi YAMAZAKI  Yota ENDO  Masao NAKAGAWA  Mikio TAKAHARA  

Publication
IEICE TRANSACTIONS (1976-1990)   Vol.E70   No.1   pp.7-10
Publication Date: 1987/01/25
Online ISSN: 
DOI: 
Print ISSN: 0000-0000
Type of Manuscript: LETTER
Category: Communication Theory
Keyword: 


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Summary: 
This letter clarifies properties of cutoff rate R0 of photon channels using coherent state and photon number state as quantum state of light. The relation between cutoff rate improvement and energy saving rate is found, when one uses the number state instead of coherent state.