Zobrazeno 1 - 10
of 472
pro vyhledávání: '"H. Lignier"'
Publikováno v:
New Journal of Physics, Vol 24, Iss 2, p 025007 (2022)
The ability to cool and trap a large number of molecules is currently a crucial challenge for the implementation of various applications in fundamental physics and cold chemistry. We here present an optical cooling of the internal degrees of freedom
Externí odkaz:
https://doaj.org/article/a55be71309d94f619df3dc296fbe7d4b
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a889f2037dd34a35fbb3df0ebb048d5b
http://arxiv.org/abs/2010.01088
http://arxiv.org/abs/2010.01088
Publikováno v:
Physical Review A
Physical Review A, American Physical Society, 2018, 98 (6), pp.063432. ⟨10.1103/PhysRevA.98.063432⟩
Physical Review A, American Physical Society, 2018, 98 (6), pp.063432. ⟨10.1103/PhysRevA.98.063432⟩
We study the possibility to enhance the phase space density of non-interacting particles submitted to a classical laser field without spontaneous emission. We clearly state that, when no spontaneous emission is present, a quantum description of the a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a783bb2b7fbe276702a3475ccd9888d
https://hal.archives-ouvertes.fr/hal-01967641
https://hal.archives-ouvertes.fr/hal-01967641
The preparation of molecules in well-defined internal states is essential for various studies in fundamental physics and physical chemistry. It is thus of particular interest to find methods that increase the brightness of molecular beams. Here, we r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f779038734c5b4f454780d162481a8a
Autor:
Jean Demaison, Denis Petitprez, Georges Wlodarczak, Harald Møllendal, A. De Meijere, A.G Steiniz, H. Lignier
Publikováno v:
Journal of Molecular Structure. 612:315-324
The microwave spectrum of 1,2-dicyanocyclobutene, C 4 H 4 (CN) 2 , has been investigated using a Stark microwave spectrometer in the 11.0–34.0 GHz spectral region, and a Fourier transform microwave spectrometer in the 6–18 GHz region. The ground
Autor:
Isam Manai, Andrea Fioretti, Mehdi Hamamda, Daniel Comparat, Ridha Horchani, Maria Allegrini, H. Lignier, Pierre Pillet
Publikováno v:
Molecular physics
111 (2013): 1844–1854. doi:10.1080/00268976.2013.813980
info:cnr-pdr/source/autori:Manai, I.; Horchani, R.; Hamamda, M.; Fioretti, A.; Allegrini, M.; Lignier, H.; Pillet, P.; Comparat, D./titolo:Laser cooling of rotation and vibration by optical pumping/doi:10.1080%2F00268976.2013.813980/rivista:Molecular physics (Print)/anno:2013/pagina_da:1844/pagina_a:1854/intervallo_pagine:1844–1854/volume:111
111 (2013): 1844–1854. doi:10.1080/00268976.2013.813980
info:cnr-pdr/source/autori:Manai, I.; Horchani, R.; Hamamda, M.; Fioretti, A.; Allegrini, M.; Lignier, H.; Pillet, P.; Comparat, D./titolo:Laser cooling of rotation and vibration by optical pumping/doi:10.1080%2F00268976.2013.813980/rivista:Molecular physics (Print)/anno:2013/pagina_da:1844/pagina_a:1854/intervallo_pagine:1844–1854/volume:111
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f70793cac585ca134e4e58f03cd79103
http://www.cnr.it/prodotto/i/288873
http://www.cnr.it/prodotto/i/288873
Autor:
H. Lignier, P. Pillet, Isam Manai, Daniel Comparat, Maria Allegrini, Andrea Fioretti, Ridha Horchani
Publikováno v:
Physical review letters
info:cnr-pdr/source/autori:Manai I. [ 1 ] ; Horchani R. [ 1 ] ; Lignier H. [ 1 ] ; Pillet P. [ 1 ] ; Comparat D. [ 1 ] ; Fioretti A. [ 2,3 ] ; Allegrini M. [ 2,3 ]/titolo:Rovibrational Cooling of Molecules by Optical Pumping/doi:10.1103%2FPhysRevLett.109.183001/rivista:Physical review letters (Print)/anno:2012/pagina_da:183001/pagina_a:183001/intervallo_pagine:183001–183001/volume:109
info:cnr-pdr/source/autori:Manai I. [ 1 ] ; Horchani R. [ 1 ] ; Lignier H. [ 1 ] ; Pillet P. [ 1 ] ; Comparat D. [ 1 ] ; Fioretti A. [ 2,3 ] ; Allegrini M. [ 2,3 ]/titolo:Rovibrational Cooling of Molecules by Optical Pumping/doi:10.1103%2FPhysRevLett.109.183001/rivista:Physical review letters (Print)/anno:2012/pagina_da:183001/pagina_a:183001/intervallo_pagine:183001–183001/volume:109
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee7d379082baf9042b2d2ba1569ed01f
http://arxiv.org/abs/1211.2652
http://arxiv.org/abs/1211.2652
We demonstrate the conversion of cold Cs_{2} molecules initially distributed over several vibrational levels of the lowest triplet state a^{3}\Sigma_{u}^{+} into the singlet ground state X^{1}\Sigma_{g}^{+}. This conversion is realized by a broadband
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bdb18dfacf827f413f70832caa5534c9
http://arxiv.org/abs/1203.1431
http://arxiv.org/abs/1203.1431
Autor:
Paolo Facchi, Giuseppe Florio, Saverio Pascazio, Niels Lörch, Oliver Morsch, Donatella Ciampini, Sandro Wimberger, Riccardo Mannella, Ennio Arimondo, Francesco V. Pepe, H. Lignier
Publikováno v:
Physical review. A 85 (2012): 053602–053602. doi:10.1103/PhysRevA.85.053602
info:cnr-pdr/source/autori:Loerch N. [ 1 ] ; Pepe F.V. [ 2,3,4 ] ; Lignier H. [ 5 ] ; Ciampini D. [ 6,7 ] ; Mannella R. [ 6 ] ; Morsch O. [ 7 ] ; Arimondo E. [ 6,7 ] ; Facchi P. [ 4,8,9 ] ; Florio G. [ 2,3,4 ] ; Pascazio S. [ 2,3,4 ] ; Wimberger S. [ 1,10 ]/titolo:Wave-function-renormalization effects in resonantly enhanced tunneling/doi:10.1103%2FPhysRevA.85.053602/rivista:Physical review. A/anno:2012/pagina_da:053602/pagina_a:053602/intervallo_pagine:053602–053602/volume:85
info:cnr-pdr/source/autori:Loerch N. [ 1 ] ; Pepe F.V. [ 2,3,4 ] ; Lignier H. [ 5 ] ; Ciampini D. [ 6,7 ] ; Mannella R. [ 6 ] ; Morsch O. [ 7 ] ; Arimondo E. [ 6,7 ] ; Facchi P. [ 4,8,9 ] ; Florio G. [ 2,3,4 ] ; Pascazio S. [ 2,3,4 ] ; Wimberger S. [ 1,10 ]/titolo:Wave-function-renormalization effects in resonantly enhanced tunneling/doi:10.1103%2FPhysRevA.85.053602/rivista:Physical review. A/anno:2012/pagina_da:053602/pagina_a:053602/intervallo_pagine:053602–053602/volume:85
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c327d610947d7d693aa05e81e5d04060
http://hdl.handle.net/11589/101675
http://hdl.handle.net/11589/101675
Autor:
Pierre Pillet, Olivier Dulieu, Laurence Pruvost, Andrea Fioretti, Maria Allegrini, Cyril Drag, Ridha Horchani, Nadia Bouloufa, Daniel Comparat, H. Lignier
Publikováno v:
Physical Chemistry Chemical Physics
Physical Chemistry Chemical Physics, Royal Society of Chemistry, 2011, 13 (42), pp.18910. ⟨10.1039/C1CP21488H⟩
Physical Chemistry Chemical Physics, Royal Society of Chemistry, 2011, 13 (42), pp.18910. ⟨10.1039/C1CP21488H⟩
Translationally cold caesium molecules are created by photoassociation below the 6s + 6p(1/2) excited state and selectively detected by resonance enhanced two photon ionization (RE2PI). A series of excited vibrational levels belonging to the 0(-)(g)