Quantum key distribution without alternative measurements and rotations

Details Quantum key distribution without alternative measurements and rotations Quantum key distribution without alternative measurements and rotations

2005-11-14

arxiv.org/abs/quant-ph/0511130v1

Physics Letters A, Vol. 349 pp. 53-58, 2006

Physics

Quantum Physics

11 pages, no figures, a modified version of quant-ph/0412014, add a security proof and delete the identification part

Scientific paper

10.1016/j.physleta.2005.09.012

A quantum key distribution protocol based on entanglement swapping is proposed. Through choosing particles by twos from the sequence and performing Bell measurements, two communicators can detect eavesdropping and obtain the secure key. Because the two particles measured together are selected out randomly, we need neither alternative measurements nor rotations of the Bell states to obtain security.

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