Rotational fluxons of Bose-Einstein condensates in coplanar double-ring traps

被引：42

作者：

Brand, J. ^{[1
,2
]}

Haigh, T. J. ^{[3
]}

Zulicke, U. ^{[1
,3
]}

机构：

[1] Massey Univ, Ctr Theoret Chem & Phys, Auckland 0745, New Zealand

[2] Massey Univ, Inst Nat Sci, Auckland 0745, New Zealand

[3] Massey Univ, Inst Fundamental Sci, Palmerston North 4442, New Zealand

来源：

PHYSICAL REVIEW A | 2009年 / 80卷 / 01期

关键词：

QUANTUM DYNAMICS; JOSEPHSON; POTENTIALS;

D O I：

10.1103/PhysRevA.80.011602

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Rotational analogs to magnetic fluxons in conventional Josephson junctions are predicted to emerge in the ground state of rotating tunnel-coupled annular Bose-Einstein condensates (BECs). Such topological condensate-phase structures can be manipulated by external potentials. We determine conditions for observing macroscopic quantum tunneling of a fluxon. Rotational fluxons in double-ring BECs can be created, manipulated, and controlled by external potentials in different ways than is possible in the solid-state system, thus rendering them a promising candidate system for studying and utilizing quantum properties of collective many-particle degrees of freedom.

引用

页数：4

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