Entangling two distant oscillators with a quantum reservoir

被引：33

作者：

Wolf, A. ^{[1
]}

De Chiara, G. ^{[2
]}

Kajari, E. ^{[1
,3
]}

Lutz, E. ^{[4
]}

Morigi, G. ^{[2
,3
]}

机构：

[1] Univ Ulm, Inst Quantum Phys, D-89069 Ulm, Germany

[2] Univ Autonoma Barcelona, Grp Opt, Dept Fis, E-08193 Bellaterra, Spain

[3] Univ Saarland, D-66041 Saarbrucken, Germany

[4] Univ Augsburg, Dept Phys, D-86135 Augsburg, Germany

来源：

EPL | 2011年 / 95卷 / 06期

关键词：

ENTANGLEMENT; ENVIRONMENT; DECOHERENCE;

D O I：

10.1209/0295-5075/95/60008

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The generation of entanglement between two oscillators that interact via a common reservoir is theoretically studied. The reservoir is modeled by a one-dimensional harmonic crystal initially in thermal equilibrium. Starting from a separable state, the oscillators can become entangled after a transient time, that is of the order of the thermalization time scale. This behaviour is observed at finite temperature even when the oscillators are at a distance significantly larger than the crystal's interparticle spacing. The underlying physical mechanisms can be explained by the dynamical properties of the collective variables of the two oscillators which may decouple from or be squeezed by the reservoir. Our predictions can be tested with an ion chain in a linear Paul trap. Copyright (C) EPLA, 2011

引用

页数：5

共 41 条

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