The security of Ping-Pong protocol

Details The security of Ping-Pong protocol The security of Ping-Pong protocol

2008-08-28

arxiv.org/abs/0808.3880v1

Physics

Quantum Physics

6 pages, 3 figures

Scientific paper

Ping-Pong protocol is a type of quantum key distribution which makes use of two entangled photons in the EPR state. Its security is based on the randomization of the operations that Alice performs on the travel photon (qubit), and on the anti-correlation between the two photons in the EPR state. In this paper, we study the security of this protocol against some known quantum attacks, and present a scheme that may enhance its security to some degree.

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