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cond-mat.quant-gas2026

Critical speed of a binary superfluid of light

Pierre-Élie Larré, Claire Michel, Nicolas Cherroret

We theoretically study the critical speed for superfluid flow of a two-dimensional miscible binary superfluid of light past a polarization-sensitive optical obstacle. This speed co…

cond-mat.quant-gas2025

Universal Random Matrix Behavior of a Fermionic Quantum Gas

Maxime Dixmerias, Giuseppe Del Vecchio Del Vecchio, Cyprien Daix +6

The pursuit of universal governing principles is a foundational endeavor in physics, driving breakthroughs from thermodynamics to general relativity and quantum mechanics. In 1951,…

cond-mat.quant-gas2025

Downfolding a quantum many-body system: the quasi-1D Fermi polaron

Lovro Anto Barišić, Giuliano Orso, Frédéric Chevy +1

We investigate the properties of an impurity immersed in an ensemble of spin-polarized fermions confined in a tight quantum wire. We use a non-perturbative variational approach tha…

cond-mat.quant-gas2025★ 4 cited

Paraxial fluids of light

Quentin Glorieux, Clara Piekarski, Quentin Schibler +2

Paraxial fluids of light are a promising platform for exploring collective phenomena in a highly tunable environment. These systems, which map the propagation of light through nonl…

cond-mat.quant-gas2025★ 2 cited

Mutual friction and vortex Hall angle in a strongly interacting Fermi superfluid

Nicola Grani, Diego Hernández-Rajkov, Cyprien Daix +8

The motion of a quantized vortex is intimately connected with its microscopic structure and the elementary excitations of the surrounding fluid. In this work, we investigate the tw…

cond-mat.quant-gas2025★ 6 cited

Spin and Density Modes in a Binary Fluid of Light

Clara Piekarski, Nicolas Cherroret, Tangui Aladjidi +1

We present the experimental observation of spin and density modes in a binary mixture of superfluids of light. A miscible Bose-Bose mixture with repulsive interactions is obtained…

cond-mat.quant-gas2024★ 9 cited

Bloch Oscillations of a Soliton in a 1D Quantum Fluid

F. Rabec, G. Chauveau, G. Brochier +3

The motion of a quantum system subjected to an external force often defeats our classical intuition. A celebrated example is the dynamics of a single particle in a periodic potenti…

cond-mat.quant-gas2024★ 10 cited

Chiral polaron formation on the edge of topological quantum matter

Amit Vashisht, Ivan Amelio, Laurens Vanderstraeten +3

Immersing a mobile impurity in a quantum many-body environment can reveal fundamental properties of the background medium, hence providing a powerful probe of quantum matter. This…

cond-mat.quant-gas2024★ 1 cited

Absence of gapless Majorana edge modes in few-leg bosonic flux ladders

Felix A. Palm, Cécile Repellin, Nathan Goldman +1

The search for Majorana excitations has seen tremendous efforts in recent years, ultimately aiming for their individual controllability in future topological quantum computers. A p…

cond-mat.quant-gas2024★ 1 cited

Anomalous Landau damping and algebraic thermalization in two-dimensional superfluids far from equilibrium

Clément Duval, Nicolas Cherroret

We present a quantitative description of the thermalization dynamics of far-from-equilibrium, two-dimensional (2D) Bose superfluids. Our analysis leverages a quantum kinetic formal…

cond-mat.quant-gas2024★ 4 cited

Dynamics of spatial phase coherence in a dissipative Bose-Hubbard atomic system

Rémy Vatré, Raphaël Bouganne, Manel Bosch Aguilera +4

We investigate the loss of spatial coherence of one-dimensional bosonic gases in optical lattices illuminated by a near-resonant excitation laser. Because the atoms recoil in a ran…

cond-mat.quant-gas2023

Exploring beyond-mean-field logarithmic divergences in Fermi-polaron energy

Ragheed Alhyder, Frédéric Chevy, Xavier Leyronas

We perform a diagrammatic analysis of the energy of a mobile impurity immersed in a strongly interacting two component Fermi gas to second order in the impurity-bath interaction. T…

cond-mat.quant-gas2023★ 7 cited

Loss features in ultracold Dy gases: two- versus three-body processes

Maxime Lecomte, Alexandre Journeaux, Loan Renaud +2

Dipolar gases like erbium and dysprosium have a dense spectrum of resonant loss features associated with their strong anisotropic interaction potential. These resonances display va…

cond-mat.quant-gas2023★ 12 cited

Controlling the interactions in a cold atom quantum impurity system

Thomas Hewitt, Tom Bertheas, Manan Jain +2

We implement an experimental architecture in which a single atom of K is trapped in an optical tweezer, and is immersed in a bath of Rb atoms at ultralow temperatures. In this regi…

cond-mat.quant-gas2023★ 11 cited

Growing Extended Laughlin States in a Quantum Gas Microscope: A Patchwork Construction

Felix A. Palm, Joyce Kwan, Brice Bakkali-Hassani +4

The study of fractional Chern insulators and their exotic anyonic excitations poses a major challenge in current experimental and theoretical research. Quantum simulators, in parti…

cond-mat.quant-gas2023★ 4 cited

Phonon damping in a 2D superfluid: insufficiency of Fermi's golden rule at low temperature

Yvan Castin, Alan Serafin, Alice Sinatra

It is generally accepted that the phonon gas of a superfluid always enters a weak coupling regime at sufficiently low temperatures, whatever the strength of the interactions betwee…

cond-mat.quant-gas2023★ 6 cited

A Multi-Purpose Platform for Analog Quantum Simulation

Shuwei Jin, Kunlun Dai, Joris Verstraten +6

Atom-based quantum simulators have had tremendous success in tackling challenging quantum many-body problems, owing to the precise and dynamical control that they provide over the…

cond-mat.quant-gas2023★ 9 cited

Quantum kinetics of quenched two-dimensional Bose superfluids

Clément Duval, Nicolas Cherroret

We study theoretically the non-equilibrium dynamics of a two-dimensional (2D) uniform Bose superfluid following a quantum quench, from its short-time (prethermal) coherent dynamics…

cond-mat.quant-gas2023★ 50 cited

Superfluid fraction in an interacting spatially modulated Bose-Einstein condensate

G. Chauveau, C. Maury, F. Rabec +7

At zero temperature, a Galilean-invariant Bose fluid is expected to be fully superfluid. Here we investigate theoretically and experimentally the quenching of the superfluid densit…

cond-mat.quant-gas2022★ 18 cited

Spectrum of collective excitations of a quantum fluid of polaritons

Ferdinand Claude, Maxime J. Jacquet, Iacopo Carusotto +3

We use a recently developed high-resolution coherent probe spectroscopy method to investigate the dispersion of collective excitations of a polaritonic quantum fluid. We measure th…

cond-mat.quant-gas2022

Coupling Navier-Stokes and Gross-Pitaevskii equations for the numerical simulation of two-fluid quantum flows

Marc Brachet, Georges Sadaka, Zhentong Zhang +2

Numerical methods for solving the Navier-Stokes equations for classical (or normal) viscous fluids are well established. This is also the case for the Gross-Pitaevskii equation, go…

cond-mat.quant-gas2022★ 1 cited

Achieving one-dimensionality with attractive fermions

F Chevy, G Orso

In this article we discuss the accuracy of effective one-dimensional theories used to describe the behavior of ultracold atomic ensembles confined in quantum wires by a harmonic tr…

cond-mat.quant-gas2022★ 4 cited

Three-body contact for fermions. I. General relations

Félix Werner, Xavier Leyronas

We consider the resonant Fermi gas, that is, two-component fermions in three dimensions interacting by a short-range potential of large scattering length. We introduce a quantity,…

cond-mat.quant-gas2022★ 22 cited

Turbulent dynamics in two-dimensional paraxial fluid of light

Myrann Baker-Rasooli, Wei Liu, Tangui Aladjidi +2

Turbulence in quantum fluids has, surprisingly, a lot in common with its classical counterpart. Recently, cold atomic gases has emerged as a well controlled experimental platform t…