Quantum Cryptography with 3-State Systems
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- 9 October 2000
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 85 (15) , 3313-3316
- https://doi.org/10.1103/physrevlett.85.3313
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.Keywords
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