Quantum amplifiers, quantum duplicators and quantum cryptography
Quantum amplifiers, quantum duplicators and quantum cryptography
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DOI:
10.1088/1355-5111/8/4/015
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发表时间:
1996-08
期刊:
影响因子:
--
通讯作者:
H. Yuen
中科院分区:
文献类型:
--
作者:
H. Yuen
Several methods for eavesdropping on the standard four coherent-state quantum cryptosystem together with a possible countermeasure are analysed and found to place a limit on the tolerable energy disadvantage of the users as compared to the eavesdropper. The possible significant role of the photon-number amplifier and the photon-number duplicator is indicated.