145 citations · 876 across the 23 of their papers we have counts for
23 papers
Instabilities of the continuous superradiant laser
Bruno Laburthe-Tolra, Martin Robert-de-Saint-Vincent, Benjamin Pasquiou
We investigate the intensity stability of the superradiant laser. Our study focuses on the architecture where a continuous beam of atoms in an electronically excited state crosses…
Coherent control over the high-dimensional space of the nuclear spin of alkaline-earth atoms
Husain Ahmed, Andrea Litvinov, Pauline Guesdon +5
We demonstrate coherent manipulation of the nuclear degrees of freedom of ultracold ground-state strontium 87 atoms, thus providing a toolkit for fully exploiting the corresponding…
Effective light-induced Hamiltonian for atoms with large nuclear spin
Domantas Burba, Hubert Dunikowski, Martin Robert-de-Saint-Vincent +2
Ultra-cold fermionic atoms, having two valence electrons, exhibit a distinctive internal state structure, wherein the nuclear spin becomes decoupled from the electronic degrees of…
Correlations and linewidth of the atomic beam continuous superradiant laser
Bruno Laburthe-Tolra, Ziyad Amodjee, Benjamin Pasquiou +1
We propose a minimalistic model to account for the main properties of a continuous superradiant laser, in which a beam of atoms crosses the mode of a high-finesse Fabry-Perot cavit…
Scalable spin squeezing from spontaneous breaking of a continuous symmetry
Tommaso Comparin, Fabio Mezzacapo, Martin Robert-de-Saint-Vincent +1
Spontaneous symmetry breaking (SSB) is a property of Hamiltonian equilibrium states which, in the thermodynamic limit, retain a finite average value of an order parameter even afte…
Measuring densities of cold atomic clouds smaller than the resolution limit
Andrea Litvinov, Pierre Bataille, Etienne Maréchal +4
We propose and demonstrate an experimental method to measure by absorption imaging the size and local column density of a cloud of atoms, even when its smallest dimension is smalle…
Adiabatic spin-dependent momentum transfer in an SU(N) degenerate Fermi gas
P. Bataille, A. Litvinov, I. Manai +7
We introduce a spin-orbit coupling scheme, where a retro-reflected laser beam selectively diffracts two spin components in opposite directions. Spin sensitivity is provided by swee…
Shelving spectroscopy of the strontium intercombination line
I. Manai, A. Molineri, C. Fréjaville +8
We present a spectroscopy scheme for the 7-kHz-wide 689-nm intercombination line of strontium. We rely on shelving detection, where electrons are first excited to a metastable stat…
Dissipative cooling of spin chains by a bath of dipolar particles
M. Robert-de-Saint-Vincent, P. Pedri, B. Laburthe-Tolra
We consider a spin chain of fermionic atoms in an optical lattice, interacting with each other by super-exchange interactions. We theoretically investigate the dissipative evolutio…
Note on the reflectance of mirrors exposed to a strontium beam
J. Huckans, W. Dubosclard, E. Maréchal +3
The high chemical reactivity of strontium, which can opacify a viewport exposed to a strontium atomic source, is a concern for some atomic physics experiments where it is sometimes…
Quasiparticle energy in a strongly interacting homogeneous Bose-Einstein condensate
Raphael Lopes, Christoph Eigen, Adam Barker +5
Using two-photon Bragg spectroscopy, we study the energy of particle-like excitations in a strongly interacting homogeneous Bose-Einstein condensate, and observe dramatic deviation…
Density matrix reconstruction of three-level atoms via Rydberg electromagnetically induced transparency
V. Gavryusev, A. Signoles, M. Ferreira-Cao +7
We present combined measurements of the spatially-resolved optical spectrum and the total excited-atom number in an ultracold gas of three-level atoms under electromagnetically ind…
Connecting Berezinskii-Kosterlitz-Thouless and BEC phase transitions by tuning interactions in a trapped gas
Richard J. Fletcher, Martin Robert-de-Saint-Vincent, Jay Man +4
We study the critical point for the emergence of coherence in a harmonically trapped two-dimensional Bose gas with tuneable interactions. Over a wide range of interaction strengths…
Full counting statistics of laser excited Rydberg aggregates in a one-dimensional geometry
H. Schempp, G. Günter, M. Robert-de-Saint-Vincent +8
We experimentally study the full counting statistics of few-body Rydberg aggregates excited from a quasi-one-dimensional Rydberg gas. We measure asymmetric excitation spectra and i…
An experimental approach for investigating many-body phenomena in Rydberg-interacting quantum systems
C. S. Hofmann, G. Günter, H. Schempp +6
Recent developments in the study of ultracold Rydberg gases demand an advanced level of experimental sophistication, in which high atomic and optical densities must be combined wit…
Sub-Poissonian statistics of Rydberg-interacting dark-state polaritons
Christoph S. Hofmann, Georg Günter, Hanna Schempp +5
Interfacing light and matter at the quantum level is at the heart of modern atomic and optical physics and enables new quantum technologies involving the manipulation of single pho…
Spontaneous avalanche ionization of a strongly blockaded Rydberg gas
M. Robert-de-Saint-Vincent, C. S. Hofmann, H. Schempp +3
We report the sudden and spontaneous evolution of an initially correlated gas of repulsively interacting Rydberg atoms to an ultracold plasma. Under continuous laser coupling we cr…
Interaction enhanced imaging of individual atoms embedded in dense atomic gases
G. Günter, M. Robert-de-Saint-Vincent, H. Schempp +3
We propose a new all-optical method to image individual atoms within dense atomic gases. The scheme exploits interaction induced shifts on highly polarizable excited states, which…
Transport regimes of cold gases in a two-dimensional anisotropic disorder
L. Pezze, M. Robert-de-Saint-Vincent, T. Bourdel +6
We numerically study the dynamics of cold atoms in a two-dimensional disordered potential. We consider an anisotropic speckle potential and focus on the classical regime, which is…
Anisotropic 2D diffusive expansion of ultra-cold atoms in a disordered potential
M. Robert-de-Saint-Vincent, J. -P. Brantut, B. Allard +6
We study the horizontal expansion of vertically confined ultra-cold atoms in the presence of disorder. Vertical confinement allows us to realize a situation with a few coupled harm…
A frequency doubled 1534 nm laser system for potassium laser cooling
Guillaume Stern, Baptiste Allard, Martin Robert-de-Saint-Vincent +4
We demonstrate a compact laser source suitable for the trapping and cooling of potassium. By frequency doubling a fiber laser diode at 1534 nm in a waveguide, we produce 767 nm las…
A quantum trampoline for ultra-cold atoms
Martin Robert De Saint Vincent, Jean-Philippe Brantut, Christian J. Bordé +3
We have observed the interferometric suspension of a free-falling Bose-Einstein condensate periodically submitted to multiple-order diffraction by a vertical 1D standing wave. The…
All-optical runaway evaporation to Bose-Einstein condensation
Jean-Francois Clément, Jean-Philippe Brantut, Martin Robert De Saint Vincent +4
We demonstrate runaway evaporative cooling directly with a tightly confining optical dipole trap and achieve fast production of condensates of 1.5x10^5 87Rb atoms. Our scheme is ch…