Quantum Fisher Information of N Particles in the Superposition of W and GHZ States

被引：22
|
作者：
Ozaydin, Fatih [1 ]
Altintas, Azmi Ali [1 ]
Bugu, Sinan [1 ]
Yesilyurt, Can [1 ]
机构：
[1] Okan Univ Istanbul, Fac Engn & Architecture, Istanbul, Turkey
来源：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2013年 / 52卷 / 09期
关键词：
Quantum Fisher information; N qubit state; W State; GHZ State;
D O I：
10.1007/s10773-013-1588-1
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the quantum Fisher information of a multipartite entangled state of N particles in a superposition of W and GHZ states. We find that the mean quantum Fisher information per particle (RMQFI) decreases with respect to the number of the particles and the peak is observed between 0.6 and 0.8 values of the superposition coefficient of W state. We present the behavior of RMQFI for N from 2 to 10 and discuss some interesting results.
引用
收藏
页码：2977 / 2980
页数：4
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