QUANTUM CRYPTOGRAPHY USING ANY 2 NONORTHOGONAL STATES
QUANTUM CRYPTOGRAPHY USING ANY 2 NONORTHOGONAL STATES
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DOI：
10.1103/physrevlett.68.3121
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发表时间：
1992-05-25
影响因子：
8.6
通讯作者：
BENNETT, CH
中科院分区：
文献类型：
--
作者：
BENNETT, CH
Quantum techniques for key distribution-the classically impossible task of distributing secret information over an insecure channel whose transmissions are subject to inspection by an eavesdropper, between parties who share no secret initially-have been proposed using (a) four nonorthogonally polarized single-photon states or low-intensity light pulses, and (b) polarization-entangled or spacetime-entangled two-photon states. Here we show that in principle any two nonorthogonal quantum states suffice, and describe a practical interferometric realization using low-intensity coherent light pulses.
