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

J. Brand, T. J. Haigh, and U. Zülicke
Phys. Rev. A 80, 011602(R) – Published 13 July 2009

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 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.

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  • Received 16 December 2008

DOI:https://doi.org/10.1103/PhysRevA.80.011602

©2009 American Physical Society

Authors & Affiliations

J. Brand1,2, T. J. Haigh3, and U. Zülicke3,1

  • 1Centre for Theoretical Chemistry and Physics, Massey University (Albany Campus), Private Bag 102 904, North Shore MSC, Auckland 0745, New Zealand
  • 2Institute of Natural Sciences, Massey University (Albany Campus), Private Bag 102 904, North Shore MSC, Auckland 0745, New Zealand
  • 3Institute of Fundamental Sciences, Massey University (Manawatu Campus), Private Bag 11 222, Palmerston North 4442, New Zealand

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Vol. 80, Iss. 1 — July 2009

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