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Minimizing nonadiabaticities in optical-lattice loading
2015 (engelsk)Inngår i: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 91, nr 3, artikkel-id 033407Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In the quest to reach lower temperatures of ultracold gases in optical-lattice experiments, nonadiabaticities during lattice loading represent one of the limiting factors that prevent the same low temperatures being reached as in experiments without lattices. Simulating the loading of a bosonic quantum gas into a one-dimensional optical lattice with and without a trap, we find that the redistribution of atomic density inside a global confining potential is by far the dominant source of heating. Based on these results we propose adjusting the trapping potential during loading to minimize changes to the density distribution. Our simulations confirm that a very simple linear interpolation of the trapping potential during loading already significantly decreases the heating of a quantum gas, and we discuss how loading protocols minimizing density redistributions can be designed.

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2015. Vol. 91, nr 3, artikkel-id 033407
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URN: urn:nbn:se:kth:diva-165217DOI: 10.1103/PhysRevA.91.033407ISI: 000351507900011Scopus ID: 2-s2.0-84927539011OAI: oai:DiVA.org:kth-165217DiVA, id: diva2:810175
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QC 20150506

Tilgjengelig fra: 2015-05-06 Laget: 2015-04-24 Sist oppdatert: 2017-12-04bibliografisk kontrollert

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Kantian, Adrian
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Physical Review A. Atomic, Molecular, and Optical Physics

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