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Minimizing nonadiab...
Minimizing nonadiabaticities in optical-lattice loading
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- Dolfi, Michele (författare)
- Theoretische Physik, ETH Zurich, 8093 Zurich, Switzerland
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- Kantian, Adrian (författare)
- Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Nordiska institutet för teoretisk fysik (Nordita),Nordita, KTH Royal Institute of Technology and Stockholm University, Roslagstullsbacken 23, SE-106 91 Stockholm, Sweden
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- Bauer, Bela (författare)
- Station Q,Microsoft Research, Santa Barbara, California 93106-6105, USA
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- Troyer, Matthias (författare)
- Theoretische Physik, ETH Zurich, 8093 Zurich, Switzerland
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(creator_code:org_t)
- 2015
- 2015
- Engelska.
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Ingår i: Physical Review A. Atomic, Molecular, and Optical Physics. - 1050-2947 .- 1094-1622. ; 91:3
- Relaterad länk:
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
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