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Phys Rev Lett. 2000 Oct 9;85(15):3313-6.

Quantum cryptography with 3-state systems.

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1
Group of Applied Physics, University of Geneva, CH-1211, Geneva 4, Switzerland.

Abstract

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 2-state carriers. Another possible method allows quantum states to belong to more than one basis. Security is not better, but many curious features arise.

PMID:
11019329
DOI:
10.1103/PhysRevLett.85.3313
[Indexed for MEDLINE]
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