Witnessing spin-orbit thermal entanglement in rare-earth ions

被引：5

作者：

Duarte, O. S. ^{[1
]}

Castro, C. S. ^{[1
]}

Soares-Pinto, D. O. ^{[2
]}

Reis, M. S. ^{[1
]}

机构：

[1] Univ Fed Fluminense, Inst Fis, BR-24210346 Niteroi, RJ, Brazil

[2] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

来源：

EPL | 2013年 / 103卷 / 04期

关键词：

QUANTUM ENTANGLEMENT; BELL INEQUALITIES; STATES; SEPARABILITY;

D O I：

10.1209/0295-5075/103/40002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We explore spin-orbit thermal entanglement in rare-earth ions, based on a witness obtained from mean energies. The entanglement temperature TE, below which entanglement emerges, is found to be thousands of kelvins above room temperature for all light rare earths. This demonstrates the robustness to environmental fluctuations of entanglement between the internal degrees of freedom of a single ion. Copyright (C) EPLA, 2013

引用

页数：4

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