Quantum key distribution with limited classical Bob

2011/06/23 by Zhiwei Sun, Sun, Zhiwei, Ruigang Du +3
Physics and Astronomy · #FOS: Physical sciences #Quantum Physics (quant-ph) #quant-ph

paper · pdf · doi:10.48550/arxiv.1106.4615

4 pages

arxiv created 2011/10/12 · arxiv updated 2011/10/13

Abstract

Two QKD protocols with limited classical Bob who performs only limited classical operations (preparing a (fresh) qubit in the classical basis and send it or doing nothing) are presented and are proved completely robust. As limited classical Bob can deterministically choose the bits, we use the feature to construct a quantum secure direct communication protocol, which is the direct communication of secret messages without first producing a shared secret key.

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