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

Journal Article · Wed Jul 15 00:00:00 EDT 2009 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.80.011602· OSTI ID:21313179

Brand, J ^[1]; Haigh, T J ^[2]; Zuelicke, U ^[2]

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

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.

• OSTI ID: 21313179
• Journal Information: Physical Review. A, Vol. 80, Issue 1; Other Information: DOI: 10.1103/PhysRevA.80.011602; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSE-EINSTEIN CONDENSATION
DEGREES OF FREEDOM
GROUND STATES
JOSEPHSON JUNCTIONS
POSTULATED PARTICLES
POTENTIALS
SOLIDS
TOPOLOGY
TRAPS
TUNNEL EFFECT