Zobrazeno 1 - 10
of 134
pro vyhledávání: '"Lignier, H."'
Publikováno v:
Phys. Chem. Chem. Phys., 2020,22, 19864-19869
This work presents an experimental protocol conceived to determine the vibrational distribution of barium monofluoride molecules seeded in a supersonic beam of argon. Here, as in many cases, the detection signal is related to the number of molecules
Externí odkaz:
http://arxiv.org/abs/2010.01088
Publikováno v:
Phys. Rev. A 97, 031401 (2018)
Cooling the rotation and the vibration of molecules by broadband light sources was possible for trapped molecular ions or ultracold molecules. Because of a low power spectral density, the cooling timescale has never fell below than a few milliseconds
Externí odkaz:
http://arxiv.org/abs/1709.06797
Autor:
Manai, I., Horchani, R., Hamamda, M., Fioretti, A., Allegrini, M., Lignier, H., Pillet, P., Comparat, D.
We have recently demonstrated that optical pumping methods combined with photoassociation of ultra-cold atoms can produce ultra-cold and dense samples of molecules in their absolute rovibronic ground state. More generally, both the external and inter
Externí odkaz:
http://arxiv.org/abs/1306.3461
Publikováno v:
Phys. Rev. Lett. 109, 183001 (2012)
We demonstrate rotational and vibrational cooling of cesium dimers by optical pumping techniques. We use two laser sources exciting all the populated rovibrational states, except a target state that thus behaves like a dark state where molecules pile
Externí odkaz:
http://arxiv.org/abs/1211.2652
Autor:
Lörch, N., Pepe, F. V., Lignier, H., Ciampini, D., Mannella, R., Morsch, O., Arimondo, E., Facchi, P., Florio, G., Pascazio, S., Wimberger, S.
Publikováno v:
Phys. Rev. A 85, 053602 (2012)
We study the time evolution of ultra-cold atoms in an accelerated optical lattice. For a Bose- Einstein condensate with a narrow quasi-momentum distribution in a shallow optical lattice the decay of the survival probability in the ground band has a s
Externí odkaz:
http://arxiv.org/abs/1201.6286
The similarity between matter waves in periodic potential and solid-state physics processes has triggered the interest in quantum simulation using Bose-Fermi ultracold gases in optical lattices. The present work evidences the similarity between elect
Externí odkaz:
http://arxiv.org/abs/0912.1241
Autor:
Zenesini, A., Lignier, H., Tayebirad, G., Radogostowicz, J., Ciampini, D., Mannella, R., Wimberger, S., Morsch, O., Arimondo, E.
We report time-resolved measurements of Landau-Zener tunneling of Bose-Einstein condensates in accelerated optical lattices, clearly resolving the step-like time dependence of the band populations. Using different experimental protocols we were able
Externí odkaz:
http://arxiv.org/abs/0903.3345
Autor:
Lignier, H., Zenesini, A., Ciampini, D., Morsch, O., Arimondo, E., Montangero, S., Pupillo, G., Fazio, R.
We introduce a new technique to probe the properties of an interacting cold atomic gas that can be viewed as a dynamical compressibility measurement. We apply this technique to the study of the superfluid to Mott insulator quantum phase transition in
Externí odkaz:
http://arxiv.org/abs/0812.3005
We have observed tunneling suppression and photon-assisted tunneling of Bose-Einstein condensates in an optical lattice subjected to a constant force plus a sinusoidal shaking. For a sufficiently large constant force, the ground energy levels of the
Externí odkaz:
http://arxiv.org/abs/0709.3137
We report on measurements of dynamical suppression of inter-well tunneling of a Bose-Einstein condensate (BEC) in a strongly driven optical lattice. The strong driving is a sinusoidal shaking of the lattice corresponding to a time-varying linear pote
Externí odkaz:
http://arxiv.org/abs/0707.0403