518 citations · 1.1k across the 29 of their papers we have counts for
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quant-ph2001★ 1 cited
Information capacity formula of quantum optical channels
Masaki Sohma, Osamu Hirota
The applications of the general formulae of channel capacity developed in the quantum information theory to evaluation of information transmission capacity of optical channel are i…
quant-ph2001★ 21 cited
Entangled Nonorthogonal States and Their Decoherence Properties
Osamu Hirota, Steven J. van Enk, Kazuo Nakamura +2
This paper presents properties of the so-called quasi-Bell states: entangled states written as superpositions of nonorthogonal states. It is shown that a special class of those sta…
quant-ph2001★ 5 cited
Entangled state based on nonorthogonal state
Osamu Hirota, Masahide Sasaki
Properties of entangled states based on nonorthogonal states are clarified. Especially, it is shown that they can have complete degree of entanglement.