A quantum key distribution and identification protocol based on entanglement swapping

Details A quantum key distribution and identification protocol based on entanglement swapping A quantum key distribution and identification protocol based on entanglement swapping

2004-12-02

arxiv.org/abs/quant-ph/0412014v1

Physics

Quantum Physics

5 pages, no figures

Scientific paper

A quantum key distribution and identification protocol is proposed, which is based on entanglement swapping. Through choosing particles by twos from the sequence and performing Bell measurements, two communicators can detect eavesdropping, identify each other and obtain the secure key according to the measurement results. Because the two particles measured together are selected out randomly, we need neither alternative measurements nor rotation of the Bell states. Furthermore, less Bell measurements are needed in our protocol than in the previous similar ones.

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