Quantum particle-number fluctuations in a two-component Bose gas in a double-well potential

被引：7

作者：

Zin, Pawel ^{[1
]}

Oles, Bartlomiej ^{[2
,3
]}

Sacha, Krzysztof ^{[2
,3
]}

机构：

[1] Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland

[2] Uniwersytet Jagiellonski, Inst Fizyki Imienia Mariana Smoluchowskiego, PL-30059 Krakow, Poland

[3] Uniwersytet Jagiellonski, Mark Kac Complex Syst Res Ctr, PL-30059 Krakow, Poland

来源：

PHYSICAL REVIEW A | 2011年 / 84卷 / 03期

关键词：

STATES; SUPERPOSITIONS;

D O I：

10.1103/PhysRevA.84.033614

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A two-component Bose gas in a double-well potential with repulsive interactions may undergo a phase separation transition if the interspecies interactions outweigh the intraspecies ones. We analyze the transition in the strong interaction limit within the two-mode approximation. Numbers of particles in each potential well are equal and constant. However, at the transition point, the ground state of the system reveals huge fluctuations of numbers of particles belonging to the different gas components; that is, the probability for observation of any mixture of particles in each potential well becomes uniform.

引用

页数：4

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