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Akademický článek

Phase transition kinetics for a Bose Einstein condensate in a periodically driven band system

Autor: E Michon, C Cabrera-Gutiérrez, A Fortun, M Berger, M Arnal, V Brunaud, J Billy, C Petitjean, P Schlagheck, D Guéry-Odelin

Publikováno v: New Journal of Physics, Vol 20, Iss 5, p 053035 (2018)

The dynamical transition of an atomic Bose–Einstein condensate from a spatially periodic state to a staggered state with alternating sign in its wavefunction is experimentally studied using a one-dimensional phase modulated optical lattice. We obse

Externí odkaz: https://doaj.org/article/38ebfb87e67c4244b86d6bf4de1312de

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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

Publikováno v: Physical Review A
Physical Review A, American Physical Society 2020, 101 (1), pp.013619. ⟨10.1103/PhysRevA.101.013619⟩

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 p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58f77ee2fa1c964cc543066e44e63d47
https://hal.archives-ouvertes.fr/hal-02493863

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Resonant excitations of a Bose Einstein condensate in an optical lattice

Autor: V. Brunaud, Juliette Billy, C. Cabrera-Gutiérrez, David Guéry-Odelin, G. Chatelain, Tomasz Kawalec, E. Michon, M. Arnal

Publikováno v: The European Physical Journal D : Atomic, molecular, optical and plasma physics
The European Physical Journal D : Atomic, molecular, optical and plasma physics, EDP Sciences, 2019, 73, pp.170. ⟨10.1140/epjd/e2019-90672-4⟩

We investigate experimentally a Bose Einstein condensate placed in a 1D optical lattice whose phase or amplitude is modulated in a frequency range resonant with the first bands of the band structure. More precisely, we study the effect of the strengt

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce2f331912d390f1cc1adfa2af55c156
https://hal.archives-ouvertes.fr/hal-02291218

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Evidence for cooling in an optical lattice by amplitude modulation

Autor: E. Michon, M. Arnal, V. Brunaud, Pierrick Cheiney, G. Chatelain, C. Cabrera-Gutiérrez, David Guéry-Odelin, Juliette Billy

Publikováno v: Physical Review A
Physical Review A, American Physical Society 2019, 100 (1), pp.013416. ⟨10.1103/PhysRevA.100.013416⟩

We report on a generic cooling technique for atoms trapped in optical lattices. It consists in modulating the lattice depth with a proper frequency sweeping. This filtering technique removes the most energetic atoms and provides, with the onset of th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::583426cc309746a9789e4581be33d921
https://hal.archives-ouvertes.fr/hal-02291685

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Phase transition kinetics for a Bose Einstein condensate in a periodically driven band system

Autor: David Guéry-Odelin, M. Arnal, Cyril Petitjean, Juliette Billy, M. Berger, E. Michon, Peter Schlagheck, C. Cabrera-Gutiérrez, A. Fortun, V. Brunaud

Publikováno v: New Journal of Physics
New Journal of Physics, Institute of Physics: Open Access Journals, 2018, 20 (5), pp.053035. ⟨10.1088/1367-2630/aabc3f⟩

International audience

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b61ac989170401628522cf2bd0d32d94
https://hal.archives-ouvertes.fr/hal-01945874

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Robust calibration of an optical-lattice depth based on a phase shift

Autor: David Guéry-Odelin, M. Arnal, Tomasz Kawalec, A. Fortun, E. Michon, Juliette Billy, V. Brunaud, C. Cabrera-Gutiérrez

Publikováno v: Physical Review A
Physical Review A, American Physical Society, 2018, 97 (4), pp.043617. ⟨10.1103/PhysRevA.97.043617⟩

We report on a new method to calibrate the depth of an optical lattice. It consists in triggering the intrasite dipole mode of the cloud by a sudden phase shift. The corresponding oscillatory motion is directly related to the intraband frequencies on

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54a965e266aab8f21acd273d7ded4ac4
https://hal.archives-ouvertes.fr/hal-01787234

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Direct tunneling delay time measurement in an optical lattice

Autor: David Guéry-Odelin, C. Cabrera-Gutiérrez, E. Michon, A. Fortun, Gabriel Condon, Juliette Billy

Publikováno v: Physical Review Letters
Physical Review Letters, American Physical Society, 2016, 117, pp.010401. ⟨10.1103/PhysRevLett.117.010401⟩

We report on the measurement of the time required for a wave packet to tunnel through the potential barriers of an optical lattice. The experiment is carried out by loading adiabatically a Bose-Einstein condensate into a 1D optical lattice. A sudden

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::555667e4c18b4c94e7e2eeedfbc78751

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