Beyond effective Hamiltonians: Micromotion of Bose-Einstein condensates in periodically driven optical lattices
| Autor: | M. Arnal, C. Cabrera-Gutiérrez, David Guéry-Odelin, A. Fortun, Peter Schlagheck, E. Michon, G. Chatelain, Juliette Billy |
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| Přispěvatelé: | Atomes Froids (LCAR), Laboratoire Collisions Agrégats Réactivité (LCAR), Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Optical lattice Quantum Physics Period (periodic table) [PHYS.COND.GAS]Physics [physics]/Condensed Matter [cond-mat]/Quantum Gases [cond-mat.quant-gas] Oscillation Phase (waves) FOS: Physical sciences Curvature 01 natural sciences 010305 fluids & plasmas law.invention Momentum Amplitude law Quantum Gases (cond-mat.quant-gas) Quantum electrodynamics 0103 physical sciences 010306 general physics Condensed Matter - Quantum Gases Quantum Physics (quant-ph) Bose–Einstein condensate ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Physical Review A Physical Review A, American Physical Society 2020, 101 (1), pp.013619. ⟨10.1103/PhysRevA.101.013619⟩ |
| ISSN: | 2469-9926 2469-9934 |
| DOI: | 10.1103/PhysRevA.101.013619⟩ |
| Popis: | We investigate a Bose Einstein condensate held in a 1D optical lattice whose phase undergoes a fast oscillation using a statistical analysis. The averaged potential experienced by the atoms boils down to a periodic potential having the same spatial period but with a renormalized depth. However, the atomic dynamics also contains a \emph{micromotion} whose main features are revealed by a Kolmorogov-Smirnov analysis of the experimental momentum distributions. We furthermore discuss the impact of the micromotion on a quench process corresponding to a proper sudden change of the driving amplitude which reverses the curvature of the averaged potential. Comment: Our preprint 1804.02147v1 [cond-mat.quant-gas] has triggered this study dedicated to the micromotion hidden behind effective Hamiltonians generated by fast time-modulation of a parameter |
| Databáze: | OpenAIRE |
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