Dissipation Induced Coherence of a Two-Mode Bose-Einstein Condensate

被引：103

作者：

Witthaut, D. ^{[1
]}

Trimborn, F. ^{[2
]}

Wimberger, S. ^{[3
]}

机构：

[1] Univ Copenhagen, Niels Bohr Inst, QUANTOP, DK-2100 Copenhagen, Denmark

[2] Tech Univ Carolo Wilhelmina Braunschweig, Inst Math Phys, D-38106 Braunschweig, Germany

[3] Univ Heidelberg, Inst Theoret Phys, D-69120 Heidelberg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.101.200402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We discuss the dynamics of a Bose-Einstein condensate in a double-well trap subject to phase noise and particle loss. The phase coherence of a weakly interacting condensate as well as the response to an external driving show a pronounced stochastic resonance effect: Both quantities become maximal for a finite value of the dissipation rate matching the intrinsic time scales of the system. Even stronger effects are observed when dissipation acts in concurrence with strong interparticle interactions, restoring the purity of the condensate almost completely and increasing the phase coherence significantly.

引用

页数：4

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