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Chen, Dong-Xu; Zhang, Pei; Li, Hong-Rong; Gao, Hong; Li, Fu-Li

Four-state quantum key distribution exploiting maximum mutual information measurement strategy. (English) Zbl 1333.81115

Quantum Inf. Process. 15, No. 2, 881-891 (2016).
Summary: We propose a four-state quantum key distribution (QKD) scheme using generalized measurement of nonorthogonal states, the maximum mutual information measurement strategy. Then, we analyze the eavesdropping process in intercept-resend and photon number splitting attack scenes. Our analysis shows that in the intercept-resend and photon number splitting attack eavesdropping scenes, our scheme is more secure than BB84 protocol and has higher key generation rate which may be applied to high-density QKD.

Cited in 2 Documents

MSC:

81P94 Quantum cryptography (quantum-theoretic aspects)
94A60 Cryptography

Keywords:

quantum information; quantum cryptography and communication security; quantum communication
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