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quant-ph2012★ 27 cited
Incompleteness and Limit of Quantum Key Distribution Theory
Osamu Hirota
It is claimed in the many papers that a trace distance () guarantees the universal composition security in quantum key distribution (QKD). In this introduction paper, at first,…
quant-ph2010★ 4 cited
Coherent pulse position modulation quantum cipher supported by secret key
Masaki Sohma, Osamu Hirota
A quantum cipher supported by a secret key so called keyed communication in quantum noise (KCQ) is very attractive in implementing high speed key generation and secure data transmi…