66 citations · 200 across the 12 of their papers we have counts for
12 papers
From harmonic to sound-like oscillations in a quantum gas confined in a gravity compensated shell trap
Matthieu Cassus, Rishabh Sharma, Maxime Pesche +4
We study the center of mass oscillations of a quantum gas in a shell shaped trap in the presence of a vertical force opposed to gravity. The measured harmonic frequency at the bott…
Fast manipulation of a quantum gas on an atom chip with a strong microwave field
Manon Ballu, Bastien Mirmand, Thomas Badr +2
We report on an experimental platform based on an atom chip encompassing a coplanar waveguide which enables the manipulation of a quantum gas of sodium atoms with strong microwave…
Loading a quantum gas from a hybrid dimple trap to a shell trap
David Rey, Simon Thomas, Rishabh Sharma +4
Starting from a degenerate Bose gas in a hybrid trap combining a magnetic quadrupole trap and an attractive optical trap resulting from a focused laser beam, we demonstrate the eff…
Expansion of a quantum gas in a shell trap
Yanliang Guo, Emmanuel Mercado Gutierrez, David Rey +6
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 dres…
A versatile ring trap for quantum gases
Mathieu de Goër de Herve, Yanliang Guo, Camilla de Rossi +5
We report on the confinement of a Bose-Einstein condensate in an annular trap with widely tunable parameters. The trap relies on a combination of magnetic, optical and radio-freque…
Supersonic rotation of a superfluid: a long-lived dynamical ring
Yanliang Guo, Romain Dubessy, Mathieu de Goër de Herve +5
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…
Comparison of time profiles for the magnetic transport of cold atoms
Thomas Badr, Dany Ben Ali, Joseph Seaward +5
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 observatio…
Producing superfluid circulation states using phase imprinting
Avinash Kumar, Romain Dubessy, Thomas Badr +4
We propose a method to prepare states of given quantized circulation in annular Bose-Einstein condensates (BEC) confined in a ring trap using the method of phase imprinting without…
Local correlations reveal the superfluid to normal boundary in a trapped two-dimensional quantum gas
Romain Dubessy, Camilla De Rossi, Mathieu De Goër de Herve +4
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 aft…
Detailed study of a transverse field Zeeman slower
Dany Ben Ali, Thomas Badr, Thibault Brézillon +3
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 polarisat…
Probing superfluidity in a quasi two-dimensional Bose gas through its local dynamics
Camilla De Rossi, Romain Dubessy, Karina Merloti +5
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…
Imaging the collective excitations of an ultracold gas using statistical correlations
Romain Dubessy, Camilla De Rossi, Thomas Badr +2
Advanced data analysis techniques have proved to be crucial for extracting information from noisy images. Here we show that principal component analysis can be successfully applied…