Scientific Results

Control of a Bose-Einstein condensate on a chip by external optical and magnetic potentials

Year: 2012

Authors: Maluckov A., Petrovic J., Gligoric G., Hadžievski L.J., Lombardi P., Schäfer F., Cataliotti F.S.

Autors Affiliation: Vinca Institute of Nuclear Sciences, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia; Max-Planck-Institut für Physik Complexer Systeme, Nöthnitzer St. 38, D-01187 Dresden, Germany; Laboratory for Nonlinear Spectroscopy, Via Nello Carrara 1, 50019 Firenze, Italy; Dipartimento di Fisica e Astronomia, Università di Firenze, Via Sansone 1, 50019 Sesto F.no (FI), Italy; Dipartimento di Energetica Sergio Stecco, Università di Firenze, Via S. Marta 3, 50139 Firenze, Italy

Abstract: In this paper we explore the possibilities of control of a Bose-Einstein condensate on an atom chip by the use of potentials generated by photonic and magnetic components. We show that the fields produced by both types of components can be modelled by a generic exponential potential and derive analytic expressions that allow for an easy assessment of their impact on a trapped condensate. Using dynamical numerical simulations we study the transport of the condensate between the control structures on a chip. We study in detail different regimes of the condensate behaviour in an evanescent light potential generated by a photonic structure in the vicinity of the condensate and in magnetic potentials generated by a wire or a coil. The calculations are based on the reported parameters of atom chip setups and available photonic and magnetic components. Finally, the model is verified by an experiment with a condensate on an atom chip and a coil.

Journal/Review: ANNALS OF PHYSICS

Volume: 327 (9)      Pages from: 2152  to: 2165

More Information: ErzThe authors thank Ivan Herrera for helpful discussions and collaboration on atom chip experiments. J. P., A. M., G. G. and Lj. H. acknowledge support from the Ministry of Education and Science of Serbia (Project III 45010 ). J. P., P. L. and F. S. C. acknowledge support from FP7 Projects CHIMONO and MALICIA, while F. S. acknowledges support from the EU project AQUTE.
KeyWords: A chip wire magnetic field; BEC transport; Exponential potential; Ramped potential
DOI: 10.1016/j.aop.2012.04.010

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