Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Perrin, Aurélien"'
We report on an experimental platform based on an atom chip encompassing a coplanar waveguide which enables to manipulate a quantum gas of sodium atoms with strong microwave fields. We describe the production with this setup of a very elongated degen
Externí odkaz:
http://arxiv.org/abs/2405.07583
Autor:
Sharma, Rishabh, Rey, David, Longchambon, Laurent, Perrin, Aurélien, Perrin, Hélène, Dubessy, Romain
We report the observation of the melting of a vortex lattice in a fast rotating quasi-two dimensional Bose gas, under the influence of thermal fluctuations. We image the vortex lattice after a time-of-flight expansion, for increasing rotation frequen
Externí odkaz:
http://arxiv.org/abs/2404.05460
Autor:
Guo, Yanliang, Gutierrez, Emmanuel Mercado, Rey, David, Badr, Thomas, Perrin, Aurélien, Longchambon, Laurent, Bagnato, Vanderlei Salvador, Perrin, Hélène, Dubessy, Romain
We report the observation of the controlled expansion of a two-dimensional quantum gas confined onto a curved shell-shaped surface. We start from the ellipsoidal geometry of a dressed quadrupole trap and introduce a novel gravity compensation mechani
Externí odkaz:
http://arxiv.org/abs/2105.12981
Autor:
Perrin, Aurélien
NEDD8, molécule de la famille de l’ubiquitine est essentielle au développement, à la croissance et à la viabilité d’un organisme, de plus c’est une cible prometteuse en thérapeutique. Nous avons découvert que l’inhibiteur spécifique d
Externí odkaz:
http://www.theses.fr/2018MONTT049/document
Autor:
Guo, Yanliang, Dubessy, Romain, de Herve, Mathieu de Goër, Kumar, Avinash, Badr, Thomas, Perrin, Aurélien, Longchambon, Laurent, Perrin, Hélène
Publikováno v:
Phys. Rev. Lett. 124, 025301 (2020)
We present the experimental realization of a long-lived superfluid flow of a quantum gas rotating in an anharmonic potential, sustained by its own angular momentum. The gas is set into motion by rotating an elliptical deformation of the trap. An evap
Externí odkaz:
http://arxiv.org/abs/1907.01795
Autor:
Badr, Thomas, Ali, Dany Ben, Seaward, Joseph, Guo, Yangliang, Wiotte, Fabrice, Dubessy, Romain, Perrin, Hélène, Perrin, Aurélien
Publikováno v:
Applied Physics B - Laser and Optics, 2019, 125 (6), pp.102
We have compared different time profiles for the trajectory of the centre of a quadrupole magnetic trap designed for the transport of cold sodium atoms. Our experimental observations show that a smooth profile characterized by an analytical expressio
Externí odkaz:
http://arxiv.org/abs/1809.07096
Local correlations reveal the superfluid to normal boundary in a trapped two-dimensional quantum gas
Autor:
Dubessy, Romain, De Rossi, Camilla, de Herve, Mathieu De Goër, Badr, Thomas, Perrin, Aurélien, Longchambon, Laurent, Perrin, Hélène
This paper reports the model free determination of the two-fluid dynamics in a trapped two-dimensional Bose gas, relying on a local principal component analysis of the dynamics after a sudden excitation.
Comment: AIP Conference Proceedings, Amer
Comment: AIP Conference Proceedings, Amer
Externí odkaz:
http://arxiv.org/abs/1711.04586
Autor:
Ali, Dany Ben, Badr, Thomas, Brézillon, Thibault, Dubessy, Romain, Perrin, Hélène, Perrin, Aurélien
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics, IOP Publishing, 2017, 50 (5), pp.055008
We present a thorough analysis of a Zeeman slower for sodium atoms made of permanent magnets in a Halbach configuration. Due to the orientation of the magnetic field, the polarisation of the slowing laser beam cannot be purely circular leading to opt
Externí odkaz:
http://arxiv.org/abs/1609.06525
Autor:
De Rossi, Camilla, Dubessy, Romain, Merloti, Karina, de Herve, Mathieu De Goër, Badr, Thomas, Perrin, Aurélien, Longchambon, Laurent, Perrin, Hélène
Publikováno v:
New Journal of Physics, Institute of Physics: Open Access Journals, 2016, 18, pp.062001
We report direct evidence of superfluidity in a quasi two-dimensional Bose gas by observing its dynamical response to a collective excitation. Relying on a novel local correlation analysis, we are able to probe inhomogeneous clouds and reveal their l
Externí odkaz:
http://arxiv.org/abs/1603.00434
Autor:
Perrin, Aurélien
Dans ce mémoire, nous présentons les études réalisées pour permettre l'observation de paires d'atomes corrélés produites lors de la collision de deux condensats de Bose-Einstein d'hélium métastable. Un système basé sur l'utilisation de tro