The Physics of No-Bit-Commitment: Generalized Quantum Non-Locality Versus Oblivious Transfer

被引：0
|
作者：
Anthony J. Short
Nicolas Gisin
Sandu Popescu
机构：
[1] University of Bristol,HH Wills Physics Laboratory
[2] University of Geneva,Group of Applied Physics
[3] Stoke Gifford,Hewlett
来源：
Quantum Information Processing | 2006年 / 5卷
关键词：
Quantum non-locality; bit-commitment; oblivious transfer; PR-box; 03.65.Ud; 03.67.Dd;
D O I：
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学科分类号：
摘要：
We show here that the recent work of Wolf and Wullschleger (quant-ph/0502030) on oblivious transfer apparently opens the possibility that non-local correlations which are stronger than those in quantum mechanics could be used for bit-commitment. This is surprising, because it is the very existence of non-local correlations which in quantum mechanics prevents bit-commitment. We resolve this apparent paradox by stressing the difference between non-local correlations and oblivious transfer, based on the time-ordering of their inputs and outputs, which prevents bit-commitment.
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页码：131 / 138
页数：7
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