Thermal entanglement in two qutrits system

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	Thermal entanglement in two qutrits system
	Zhang GF ; Liang JQ ; Zhang GE ; Yan QW
刊名	european physical journal d
	2005
卷号	32 期号:3 页码:409-412
关键词	QUANTUM INFORMATION
ISSN号	1434-6060
通讯作者	zhang, gf, chinese acad sci, inst semicond, state key lab superlattices & microstruct, pob 912, beijing 100083, peoples r china. 电子邮箱地址: gf1978zhang2001@yahoo.com
中文摘要	the thermal entanglement in a two-qutrit system with two spins coupled by exchange interaction is investigated in terms of the measure of entanglement called "negativity". it is found that the thermal entanglement is present and evolvements symmetrically between both ferromagnetic and antiferromagnetic exchange couplings with the temperature. moreover the critical temperature at which the negativity vanishes increases with the exchange coupling constant j. from the temperature and magnetic field dependences we demonstrate that the temperature and the magnetic field can affect the feature of the thermal entanglement significantly.
学科主题	半导体物理
收录类别	SCI
语种	英语
公开日期	2010-03-17
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/8860]
专题	半导体研究所_中国科学院半导体研究所（2009年前）
推荐引用方式 GB/T 7714	Zhang GF,Liang JQ,Zhang GE,et al. Thermal entanglement in two qutrits system[J]. european physical journal d,2005,32(3):409-412.
APA	Zhang GF,Liang JQ,Zhang GE,&Yan QW.(2005).Thermal entanglement in two qutrits system.european physical journal d,32(3),409-412.
MLA	Zhang GF,et al."Thermal entanglement in two qutrits system".european physical journal d 32.3(2005):409-412.