Spin Squeezing of Superposition of Multi-Qubit GHZ State and W State

被引：5

作者：

Yi, Xiao-Jie ^{[1
]}

Wang, Jian-Min ^{[1
]}

机构：

[1] Jiangxi Sci & Technol Normal Univ, Coll Commun & Electron, Nanchang 330013, Peoples R China

来源：

INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2011年 / 50卷 / 08期

关键词：

Spin squeezing; Superpositions; GHZ state; W state; CONTROLLED TELEPORTATION; SEPARABILITY CRITERION; ENTANGLEMENT;

D O I：

10.1007/s10773-011-0741-y

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the properties of spin squeezing in a general superposition of multi-qubit GHZ state and W state. It is shown that the mean spin direction is determined by the coefficients of superposition and the relative phase between the GHZ state and the W state; while the length of mean spin and spin squeezing parameter are only determined by coefficient of superposition.

引用

页码：2520 / 2525

页数：6

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