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arXiv · 0812.3029

Rotational Fluxons of Bose-Einstein Condensates in Coplanar Double-Ring Traps

J. Brand·T. J. Haigh·U. Zülicke
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Abstract

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 potential in different ways than possible in the solid state system, thus rendering them a promising new candidate system for studying and utilizing quantum properties of collective many-particle degrees of freedom.

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J. Brand, T. J. Haigh, U. Zülicke. 2009-03-03. Rotational Fluxons of Bose-Einstein Condensates in Coplanar Double-Ring Traps. https://doi.org/10.1103/physreva.80.011602

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