Quantum key distribution with limited classical Bob

Details Quantum key distribution with limited classical Bob Quantum key distribution with limited classical Bob

2011-06-23

arxiv.org/abs/1106.4615v2

Physics

Quantum Physics

4 pages

Scientific paper

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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