Josephson tunnelling of a phase-imprinted Bose-Einstein condensate in a time-dependent double-well potential

Sakellari, E; Proukakis, NP; Leadbeater, M; Adams, CS

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.

Citation

Sakellari, E., Proukakis, N., Leadbeater, M., & Adams, C. (2004). Josephson tunnelling of a phase-imprinted Bose-Einstein condensate in a time-dependent double-well potential. New Journal of Physics, 6, Article 42. https://doi.org/10.1088/1367-2630/6/1/042

• Journal Article Type: Article
• Online Publication Date: Apr 8, 2004
• Publication Date: Apr 8, 2004
• Deposit Date: Apr 4, 2013
• Publicly Available Date: May 18, 2017
• Journal: New Journal of Physics
• Electronic ISSN: 1367-2630
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 6
• Article Number: 42
• DOI: https://doi.org/10.1088/1367-2630/6/1/042
• Public URL: https://durham-repository.worktribe.com/output/1460817