Award: Quentin thesis award
The Center for Cold Atom Research in the Paris Region (IFRAF) has recognized the high quality of the doctoral work of Quentin Beaufils by awarding him the “Young researcher Prize” for 2011.
Tag Quentin Beaufils
Control of dipolar relaxation in external fields
We study dipolar relaxation in both ultracold thermal and Bose-condensed Cr atom gases. We show three different ways to control dipolar relaxation, making use of either a static magnetic field, an oscillatory magnetic field, or an optical lattice to reduce the dimensionality of the gas from three-dimensional (3D) to two-dimensional (2D).
arXiv:1002.0222 (2010) / Phys. Rev. A 81, 042716 (2010)
Condensation de Bose-Einstein du chrome
French version: Condensation de Bose-Einstein du chrome A cause de son fort moment magnétique dans l’état fondamental, le chrome est un bon candidat pour l’étude des interactions dipolaires dans un gaz dégénéré. Nous avons mis en place un dispositif expérimental…
Seminar: PhLAM, Lille
Condensation du chrome et collisions assistées par des champs radiofréquences
Radio-frequency association of molecules: the dressed state picture
We develop a theoretical model to describe the radio-frequency (RF) induced coupling of a pair of colliding atoms to a Feshbach molecule when a magnetic field arbitrarily far from the Feshbach resonance is modulated in time.
arXiv:0812.4355 (2008) / Eur. Phys. J. D 56, (2010)
A Feshbach resonance in d-wave collisions
We analyze a narrow Feshbach resonance with ultracold chromium atoms colliding in 𝑑 wave. The resonance is made possible by dipole-dipole interactions, which couple an incoming 𝑙=2 collision channel with a bound molecular state with 𝑙=0.
arXiv:0811.4282 (2008) / Phys. Rev. A 79, 032706 (2009)
Radio-frequency-induced ground-state degeneracy in a Bose-Einstein condensate of chromium atoms
We study the effect of strong radio-frequency (RF) fields on a Bose-Einstein condensate (BEC) of chromium atoms, in a regime where the RF frequency is much larger than the Larmor frequency.
arXiv:0808.3931 (2008) / Phys. Rev. A 78, 051603(R) (200)
All-optical production of chromium Bose-Einstein condensates
We report on the production of 52Cr Bose-Einstein condensates with an all-optical method.
arXiv:0712.3521 (2007) / Phys. Rev. A 77, 061601(R) (2008)
Seminar: LPL, Villetaneuse
Condensation du chrome
Averaging out magnetic forces with fast RF sweeps in an optical trap for metastable chromium atoms
We introduce a time-averaged trap in which the internal state of the atoms is rapidly modulated to modify the magnetic trapping potential.
arXiv:0711.0663 (2007) / Phys. Rev. A 77, 053413 (2008)