Transport of ultracold atoms between concentric traps via spatial adiabatic passage
Polo Gomez, Juan (Universitat Autònoma de Barcelona. Departament de Física)
Benseny Cases, Albert (Okinawa Institute of Science and Technology. Quantum Systems Unit)
Busch, Thomas (Okinawa Institute of Science and Technology. Quantum Systems Unit)
Ahufinger, Verònica (Universitat Autònoma de Barcelona. Departament de Física)
Mompart Penina, Jordi (Universitat Autònoma de Barcelona. Departament de Física)

Date:	2016
Abstract:	Spatial adiabatic passage processes for ultracold atoms trapped in tunnel-coupled cylindrically symmetric concentric potentials are investigated. Specifically, we discuss the matter-wave analog of the rapid adiabatic passage (RAP) technique for a high fidelity and robust loading of a single atom into a harmonic ring potential from a harmonic trap, and for its transport between two concentric rings. We also consider a system of three concentric rings and investigate the transport of a single atom between the innermost and the outermost rings making use of the matter-wave analog of the stimulated Raman adiabatic passage (STIRAP) technique. We describe the RAP-like and STIRAP-like dynamics by means of a two- and a three-state model, respectively, obtaining good agreement with the numerical simulations of the corresponding two-dimensional Schrödinger equation.
Grants:	Ministerio de Economía y Competitividad FIS2014-57460-P Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1639 Ministerio de Ciencia e Innovación BES2012-05344
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Atomtronics ; Spatial adiabatic passage ; Ring potentials ; Ultracold atoms
Published in:	New journal of physics, Vol. 18 (January 2016) , art. 15010, ISSN 1367-2630

DOI: 10.1088/1367-2630/18/1/015010

11 p, 2.2 MB

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