On decoherence in quantum clock synchronization

被引：16
|
作者：
Boixo, S. [1 ]
Caves, C. M. [1 ]
Datta, A. [1 ]
Shaji, A. [1 ]
机构：
[1] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA
来源：
LASER PHYSICS | 2006年 / 16卷 / 11期
关键词：
D O I：
10.1134/S1054660X06110065
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study two quantum versions of the Eddington clock-synchronization protocol in the presence of decoherence. The first protocol uses maximally entangled states to achieve the Heisenberg limit for clock synchronization. The second protocol achieves the limit without using entanglement. We show the equivalence of the two protocols under any single-qubit decoherence model that does not itself provide synchronization information.
引用
收藏
页码：1525 / 1532
页数：8
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