The physics of no-bit-commitment: Generalized quantum non-locality versus oblivious transfer

被引：16
|
作者：
Short, Anthony J.
Gisin, Nicolas
Popescu, Sandu
机构：
[1] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England
[2] Univ Geneva, Appl Phys Grp, CH-1211 Geneva 4, Switzerland
[3] Hewlett Packard Labs, Bristol BS12 6QZ, Avon, England
来源：
QUANTUM INFORMATION PROCESSING | 2006年 / 5卷 / 02期
基金：
英国工程与自然科学研究理事会;
关键词：
quantum non-locality; bit-commitment; oblivious transfer; PR-box;
D O I：
10.1007/s11128-006-0015-4
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
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.
引用
收藏
页码：131 / 138
页数：8
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