Formation de molécules dans des gaz atomiques ultra froids par des champs quasi résonnants.

Autor: Sokhoyan, R.S.

Nous étudions la dynamique non linéaire en champ moyen de la formation de molécules diatomiques par photo-association ou magnéto-association d'atomes ultra froids pour un système entièrement atomique dans l'état initial. Nous montrons que dans

Externí odkaz: http://tel.archives-ouvertes.fr/tel-00534444
http://tel.archives-ouvertes.fr/docs/00/53/44/44/PDF/Ruzan_thesis_OK.pdf

From atomic to molecular Bose-Einstein condensates: a physically realizable term-crossing model for cold atom association

Autor: Sokhoyan , R.S., Ishkhanyan , A.M., Leroy , C., Jauslin , Hans-Rudolf

Publikováno v: 21st International Conference on High Resolution Molecular Spectroscopy
21st International Conference on High Resolution Molecular Spectroscopy, Sep 2010, Poznan, Poland
The 21st International Conference on High Resolution Molecular Spectroscopy POZNAN 2010.
The 21st International Conference on High Resolution Molecular Spectroscopy POZNAN 2010., Sep 2010, Poznan, Poland

Using an exact third-order NL di®erential equation for the molecular state probability, we develop a variational approach which enables us to construct highly accurate analytic approximations describing time dynamics of the coupled atom-molecular sy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::04e73d29a177c7e7b89de0bcb87c195f
https://hal.science/hal-00529818

The Demkov-Kunike model in the coherent magneto- and photoassociation of ultracold atoms

Autor: Sokhoyan, R.S., Ghazaryan, V., Azizbekyan, H.H., Leroy, Claude, Jauslin, Hans-Rudolf, Ishkhanyan, A.M.

Publikováno v: BOLTZ09-Bloch Oscillations and Landau-Zener Tunneling: From Hot Electrons to Ultracold Atoms
BOLTZ09-Bloch Oscillations and Landau-Zener Tunneling: From Hot Electrons to Ultracold Atoms, Apr 2009, Dresden, Germany

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::a62a6d0aa9b8928c064ebc591f60190a
https://hal.archives-ouvertes.fr/hal-00452237

Landau-Zener Transition for Association of an Atomic Bose-Einstein Condensate With Inter-Particle Elastic Interactions Included

Autor: Sahakyan , N., Azizbekyan , H.H., Sokhoyan , R.S., Leroy , Claude, Pashayan-Leroy , Y. T., Ishkhanyan , A.M.

Publikováno v: Proceedings Conference on Laser Physics-2008
Conference on Laser Physics-NASA
NASA. Conference on Laser Physics-NASA, Oct 2008, Ashtarak, Armenia. pp.29-33, 2009
Conference on Laser Physics-NASA, Oct 2008, Ashtarak, Armenia. pp.29-33
Proceedings Conference on Laser Physics-NASA

International audience; We study strong coupling limit of the non-linear Landau-Zener transition at coherent photo- and magneto-association of cold atoms, focusing on the role of the elastic interspecies scatterings. Using an exact third-order nonlin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::0fb71ccc14a3f25190b8138e615a2411
https://hal.archives-ouvertes.fr/hal-00451006

Fermi-type interaction in molecular and atomic Hamiltonians. Application to molecular systems and Bose-Einstein condensates

Autor: Leroy , Claude, Ishkhanyan , A.M., Sokhoyan , R.S., Gromova , O.V., Michelot , F., Jauslin , Hans-Rudolf, Ulenikov , O.N., Bekhtereva , E.S.

Publikováno v: Proceedings Conference on Laser Physics
Conference on Laser Physics-2008
Conference on Laser Physics-2008, 2008, Armenia. pp.16-20
Conference on Laser Physics-2008, 2008, Armenia. pp.16-20, 2008

International audience; We present a simple prescription to build phenomenological Hamiltonians describing Fermi-type interactions and apply the developed formalism to two distinct physical systems. First, in a very simple way, we derive equations de

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::217313a12d48cd8a0fee79a29f9843c9
https://hal.archives-ouvertes.fr/hal-00449533