Thermal Spin Squeezing as a Signature of Thermal Global Entanglement in Heisenberg Models

Thermal Spin Squeezing as a Signature of Thermal Global Entanglement in Heisenberg Models

We study thermal spin squeezing （TSS） and thermal global entanglement （TGE） in a general Heisenberg spin chain, in the presence of Dzyaloshinskii-Moriya interaction and an external magnetic field. We derive an inequality associating the squeezing parameter and the global concurrence, which establish...

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Veröffentlicht in:理论物理通讯：英文版 2012, Vol.58 (8), p.198-204
1. Verfasser: Mojtaba Jafarpour Azita Naji
Format: Artikel
Sprache:eng
Schlagworte:
TSS
压缩
外部磁场
海森堡模型
海森堡自旋链
热纠缠
物理学报
签名
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creator Mojtaba Jafarpour Azita Naji
description We study thermal spin squeezing （TSS） and thermal global entanglement （TGE） in a general Heisenberg spin chain, in the presence of Dzyaloshinskii-Moriya interaction and an external magnetic field. We derive an inequality associating the squeezing parameter and the global concurrence, which establishes （TSS） as a signature of （TGE）. The inequality reduces to equality for particular symmetric chains which also associates TSS with bipartite entanglement in such systems. We also check the results by presenting two numerical examples.
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source IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link; Alma/SFX Local Collection
subjects TSS
压缩
外部磁场
海森堡模型
海森堡自旋链
热纠缠
物理学报
签名
title Thermal Spin Squeezing as a Signature of Thermal Global Entanglement in Heisenberg Models
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