Eavesdropping on the Bostroem-Filbinger Communication Protocol in Noisy Quantum Channel

Details Eavesdropping on the Bostroem-Filbinger Communication Protocol in Noisy Quantum Channel Eavesdropping on the Bostroem-Filbinger Communication Protocol in Noisy Quantum Channel

2004-04-14

arxiv.org/abs/quant-ph/0404085v1

Physics

Quantum Physics

4 pages; PSCA, 03.67.Hk, 03.65.Ud

Scientific paper

We show an eavesdropping scheme on Bostr\UNICODE{0xf6}m-Felbinger communication protocol (called ping-pong protocol) [Phys. Rev. Lett. 89, 187902 (2002)] in an ideal quantum channel. A measurement attack can be perfectly used to eavesdrop Alice's information instead of a most general quantum operation attack. In a noisy quantum channel, the direct communication is forbidden. We present a quantum key distribution protocol based on the ping-pong protocol, which can be used in a low noisy quantum channel. And we give a weak upper bound on the bit-error ratio that the detection probability $d$ should be lower than 0.11, which is a requirement criterion when we utilize the ping-pong protocol in a real communication.

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