Volume 93, Number 2, March 2011
|Number of page(s)||5|
|Section||Atomic, Molecular and Optical Physics|
|Published online||24 January 2011|
Shortcut to adiabaticity for an interacting Bose-Einstein condensate
Université de Nice-Sophia Antipolis, Institut Non Linéaire de Nice, CNRS - 1361 route des Lucioles, F-06560 Valbonne, France, EU
2 Universidad de Buenos Aires, FCEN, Departamento de Fisica and Instituto de Fisica de Buenos Aires, CONICET - Ciudad Universitaria, Pab. I C1428EGA Buenos Aires, Argentina
Accepted: 7 January 2011
We present an investigation of the fast decompression of a three-dimensional (3D) Bose-Einstein condensate (BEC) at finite temperature using an engineered trajectory for the harmonic trapping potential. Taking advantage of the scaling invariance properties of the time-dependent Gross-Pitaevskii equation, we exhibit a solution yielding a final state identical to that obtained through a perfectly adiabatic transformation, in a much shorter time. Experimentally, we perform a large trap decompression and displacement within a time comparable to the final radial trapping period. By simultaneously monitoring the BEC and the non-condensed fraction, we demonstrate that our specific trap trajectory is valid both for a quantum interacting many-body system and a classical ensemble of non-interacting particles.
PACS: 37.10.-x – Atom, molecule, and ion cooling methods / 67.85.-d – Ultracold gases, trapped gases
© EPLA, 2011
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.