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Quantum key distribution with vacua or dim pulses as decoy states

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1 Author(s)
Hoi-Kwong Lo ; Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada

Hwang (2003) has proposed a decoy state method in quantum key distribution (QKD). In Hwang's proposal, the average photon number of the decoy state is about two. This paper propose a new decoy state scheme using vacua or very weak coherent states as decoy states and discuss its advantages.

Published in:

Information Theory, 2004. ISIT 2004. Proceedings. International Symposium on

Date of Conference:

27 June-2 July 2004