Natural thermal and magnetic entanglement in the 1D Heisenberg model

被引：695

作者：

Arnesen, MC

Bose, S

Vedral, V

机构：

[1] Univ Oxford, Ctr Quantum Computat, Clarendon Lab, Oxford OX1 3PU, England

[2] Imperial Coll, Opt Sect, Blackett Lab, London SW7 2BZ, England

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.87.017901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the entanglement between any two spins in a one dimensional Heisenberg chain as a function of temperature and the external magnetic field. We find that the entanglement in an antiferromagnetic chain can be increased by increasing the temperature or the external field. Increasing the field can also create entanglement between otherwise disentangled spins. This entanglement can be confirmed by testing Bell's inequalities involving any two spins in the solid.

引用

页数：4

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