期刊
PHYSICAL REVIEW LETTERS
卷 85, 期 15, 页码 3313-3316出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.85.3313
关键词
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We consider quantum cryptographic schemes where the carriers of information are 3-state particles. One protocol uses four mutually unbiased bases and appears to provide better security than obtainable with a-state carriers. Another possible method allows quantum states to belong to more than one basis. Security is not better, but many curious features arise.
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