169 citations · 624 across the 16 of their papers we have counts for
16 papers
Power of a quasi-spin quantum Otto engine at negative effective temperature
Jens Nettersheim, Sabrina Burgardt, Quentin Bouton +3
Heat engines usually operate by exchanging heat with thermal baths at different (positive) temperatures. Nonthermal baths may, however, lead to a significant performance boost. We…
Accurate measurement of the Sagnac effect for matter waves
Romain Gautier, Mohamed Guessoum, Leonid A. Sidorenkov +3
A rotating interferometer with paths that enclose a physical area exhibits a phase shift proportional to this area and to the rotation rate of the frame. Understanding the origin o…
Sensitivity of a collisional single-atom spin probe
Jens Nettersheim, Quentin Bouton, Daniel Adam +1
We study the sensitivity of a collisional single-atom probe for ultracold gases. Inelastic spin-exchange collisions map information about the gas temperature T or external magnetic…
Coherent and dephasing spectroscopy for single-impurity probing of an ultracold bath
Daniel Adam, Quentin Bouton, Jens Nettersheim +2
We report Ramsey spectroscopy on the clock states of individual Cs impurities immersed in an ultracold Rb bath. We record both the interaction-driven phase evolution and the decay…
An endoreversible quantum heat engine driven by atomic collisions
Quentin Bouton, Jens Nettersheim, Sabrina Burgardt +3
Quantum heat engines are subjected to quantum fluctuations related to their discrete energy spectra. Such fluctuations question the reliable operation of quantum engines in the mic…
Single-atom quantum probes for ultracold gases using nonequilibrium spin dynamics
Quentin Bouton, Jens Nettersheim, Daniel Adam +5
Quantum probes are atomic-sized devices mapping information of their environment to quantum mechanical states. By improving measurements and at the same time minimizing perturbatio…
Nonequilibrium thermodynamics and optimal cooling of a dilute atomic gas
Daniel Mayer, Felix Schmidt, Steve Haupt +5
Characterizing and optimizing thermodynamic processes far from equilibrium is a challenge. This is especially true for nanoscopic systems made of few particles. We here theoretical…
Tailored single-atom collisions at ultra-low energies
Felix Schmidt, Daniel Mayer, Quentin Bouton +5
We employ collisions of individual atomic cesium (Cs) impurities with an ultracold rubidium (Rb) gas to probe atomic interaction with hyperfine- and Zeeman-state sensitivity. Contr…
Controlled doping of a bosonic quantum gas with single neutral atoms
Daniel Mayer, Felix Schmidt, Daniel Adam +6
We report on the experimental doping of a Rubidium (Rb) Bose-Einstein condensate (BEC) with individual neutral Cesium (Cs) atoms. We discuss the experimental tools a…
Quantum spin dynamics of individual neutral impurities coupled to a Bose-Einstein condensate
Felix Schmidt, Daniel Mayer, Quentin Bouton +4
We report on spin dynamics of individual, localized neutral impurities immersed in a Bose-Einstein condensate. Single Cesium atoms are transported into a cloud of Rubidium atoms, t…
Single-atom-resolved probing of lattice gases in momentum space
Hugo Cayla, Cécile Carcy, Quentin Bouton +4
Measuring the full distribution of individual particles is of fundamental importance to characterize many-body quantum systems through correlation functions at any order. Here we d…
Momentum-resolved observation of thermal and quantum depletion in an interacting Bose gas
R. Chang, Q. Bouton, H. Cayla +4
We report on the single-atom-resolved measurement of the distribution of momenta in a weakly interacting Bose gas after a 330 ms time-of-flight. We investigate it for var…
Characterization of a detector chain using a FPGA-based Time-to-Digital Converter to reconstruct the three-dimensional coordinates of single particles at high flux
F. Nogrette, D. Heurteau, R. Chang +4
We report on the development of a novel FPGA-based Time-to-Digital Converter and its implementation in a detection chain that records the coordinates of single particles along thre…
Fast production of Bose-Einstein condensates of metastable Helium
Q. Bouton, R. Chang, A. L. Hoendervanger +4
We report on the Bose-Einstein condensation of metastable Helium-4 atoms using a hybrid approach, consisting of a magnetic quadrupole and a crossed optical dipole trap. In our setu…
Three-dimensional laser cooling at the Doppler limit
Rockson Chang, Lynn Hoendervanger, Quentin Bouton +6
Many predictions of Doppler cooling theory of two-level atoms have never been verified in a three-dimensional geometry, including the celebrated minimum achievable temperature $\hb…
An oscillator circuit to produce a radio-frequency discharge and application to metastable helium saturated absorption spectroscopy
F. Moron, A. L. Hoendervanger, M. Bonneau +5
We present an rf gas discharge apparatus which provides an atomic frequency reference for laser manipulation of metastable helium. We discuss the biasing and operation of a Colpitt…