Coherent control of mesoscopic tunneling in a Bose-Einstein condensate

For a weakly interacting Bose-Einstein condensate in a double well, an appropriate time-dependent modulation of the trapping potential counteracts the ''self-trapping'' effects of the interactions, thereby allowing tunneling between the wells. It is demonstrated numerically that...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2005-11, Vol.72 (5)
Main Authors: Weiss, Christoph, Jinasundera, Tharanga
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
BOSE-EINSTEIN CONDENSATION
CONDENSATES
CONTROL
MODULATION
TIME DEPENDENCE
TRAPPING
TUNNEL EFFECT
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Summary:For a weakly interacting Bose-Einstein condensate in a double well, an appropriate time-dependent modulation of the trapping potential counteracts the ''self-trapping'' effects of the interactions, thereby allowing tunneling between the wells. It is demonstrated numerically that this modulation can be employed for transferring the condensate from one well to the other in a controlled way. Moreover it allows the production of mesoscopic entangled states on short time scales.
ISSN:1050-2947
1094-1622
DOI:10.1103/PHYSREVA.72.0