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Josephson Tunnelling of a Phase-imprinted Bose-Einstein Condensate in a Time-dependent Double-Well Potential

Lookup NU author(s): Professor Nikolaos Proukakis

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Abstract

This paper discusses the feasibility of experimental control of the flow direction of atomic Bose-Einstein condensates in a double-well potential using phase imprinting. The flow is induced by the application of a time-dependent potential gradient, providing a clear signature of macroscopic quantum tunnelling in atomic condensates. By studying both initial-state preparation and subsequent tunnelling dynamics, we find the parameters to optimize the phase-induced Josephson current. We find that the effect is largest for condensates of up to a few thousand atoms, and is only weakly dependent on trap geometry.


Publication metadata

Author(s): Sakellari E, Proukakis NP, Leadbeater M, Adams CS

Publication type: Article

Publication status: Published

Journal: New Journal of Physics

Year: 2004

Volume: 6

Issue: 42

Pages: 1-11

ISSN (print): 1367-2630

Publisher: Institute of Physics Publishing Ltd.

URL: http://dx.doi.org/10.1088/1367-2630/6/1/042

DOI: 10.1088/1367-2630/6/1/042


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