Quantum cryptography, eavesdropping and unsharp spin measurement

被引：0
|
作者：
Roy, S [1 ]
Kar, G [1 ]
机构：
[1] Indian Stat Inst, Phys & Appl Math Unit, Calcutta 700035, W Bengal, India
来源：
CHAOS SOLITONS & FRACTALS | 1999年 / 10卷 / 10期
关键词：
D O I：
暂无
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
The various eavesdropping strategies on a quantum cryptographic channel as discussed by Gisin and and Huttner, Phys. Lett. A, Vol. 228, p. 13, 1997, can be reproduced by unsharp spin (represented by positive operator valued measure) measurement of spin-1/2 particle. An upper bound for unsharp parameter is obtained so that it still gives rise to violation of Bell's inequality for the two particle transmission channel. (C) 1999 Elsevier Science Ltd. All rights reserved.
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页码：1715 / 1718
页数：4
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