653 citations · 1.7k across the 34 of their papers we have counts for
34 papers
Dispersive Shock Waves in a 1D Quantum Liquid
Philipp Schüttelkopf, Mohammadamin Tajik, Federica Cataldini +8
We implement a moving boundary condition in a 1D quantum liquid to study nonlinear wave breaking and its regularization by dispersion. Programmable optical potentials allow us to c…
Experimentally probing the Quantum Physics in the Inverted Harmonic Oscillator
Si-Cong Ji, Philipp Schüttelkopf, Nataliia Bazhan +6
When a quantum system passes through an unstable fixed point the local dynamics reduces to the inverted harmonic oscillator (IHO). It exponentially amplifies along one quadrature w…
Damping of phonons in one-dimensional quantum fluids
Federica Cataldini, Nataliia Bazhan, João Sabino +7
Collective excitations in one-dimensional (1D) quantum fluids are expected to propagate almost without dissipation. Here we directly excite phonon modes in a weakly interacting 1D…
Momentum-resolved two-dimensional spectroscopy as a probe of nonlinear quantum field dynamics
Duilio De Santis, Alex Gómez Salvador, Nataliia Bazhan +6
Emergent collective excitations constitute a hallmark of interacting quantum many-body systems, yet in solid-state platforms their study has been largely limited by the constraints…
Nondestructive optomechanical detection scheme for Bose-Einstein condensates
Cisco Gooding, Cameron R. D. Bunney, Samin Tajik +6
We present a two-tone heterodyne optical readout scheme to extract unequal-time density correlations along an arbitrary stationary interaction path from a pancake-shaped Bose-Einst…
Universal non-thermal fixed point for quasi-1D Bose gases
Qi Liang, RuGway Wu, Pradyumna Paranjape +4
Spatio-temporal scaling dynamics connected to non-thermal fixed points has been suggested as a universal framework to describe the relaxation of isolated far-from-equilibrium syste…
Tachyonic and parametric instabilities in an extended bosonic Josephson junction
Laura Batini, Sebastian Erne, Jörg Schmiedmayer +1
We study the dynamics and decay of quantum phase coherence for Bose-Einstein condensates in tunnel-coupled quantum wires. The two elongated Bose-Einstein condensates exhibit a wide…
Measurement of total phase fluctuation in cold-atomic quantum simulators
Taufiq Murtadho, Federica Cataldini, Sebastian Erne +4
Studying the dynamics of quantum many-body systems is often constrained by the limitations in probing relevant observables, especially in continuous systems. A powerful method to g…
Systematic analysis of relative phase extraction in one-dimensional Bose gases interferometry
Taufiq Murtadho, Marek Gluza, Khatee Zathul Arifa +3
Spatially resolved relative phase measurement of two adjacent 1D Bose gases is enabled by matter-wave interference upon free expansion. However, longitudinal dynamics is typically…
Hamiltonian Learning in Quantum Field Theories
Robert Ott, Torsten V. Zache, Maximilian Prüfer +5
We discuss Hamiltonian learning in quantum field theories as a protocol for systematically extracting the operator content and coupling constants of effective field theory Hamilton…
Optimal control of quasi-1D Bose gases in optical box potentials
Andreas Deutschmann-Olek, Katharina Schrom, Nikolaus Würkner +3
In this paper, we investigate the manipulation of quasi-1D Bose gases that are trapped in a highly elongated potential by optimal control methods. The effective meanfield dynamics…
The Whitham approach to Generalized Hydrodynamics
Frederik Møller, Philipp Schüttelkopf, Jörg Schmiedmayer +1
The formation of dispersive shock waves in the one-dimensional Bose gas represents a limitation of Generalized Hydrodynamics (GHD) due to the coarse-grained nature of the theory. N…
The discrete Green's function method for wave packet expansion via the free Schrödinger equation
Jan-Frederik Mennemann, Sebastian Erne, Igor Mazets +1
We consider the expansion of wave packets governed by the free Schrödinger equation. This seemingly simple task plays an important role in simulations of various quantum experiment…
Optimizing optical potentials with physics-inspired learning algorithms
Martino Calzavara, Yevhenii Kuriatnikov, Andreas Deutschmann-Olek +6
We present our new experimental and theoretical framework which combines a broadband superluminescent diode (SLED/SLD) with fast learning algorithms to provide speed and accuracy i…
Experimental Observation of Curved Light-Cones in a Quantum Field Simulator
Mohammadamin Tajik, Marek Gluza, Nicolas Sebe +10
We investigate signal propagation in a quantum field simulator of the Klein-Gordon model realized by two strongly coupled parallel one-dimensional quasi-condensates. By measuring l…
Primary thermalisation mechanism of Early Universe observed from Faraday-wave scattering on liquid-liquid interfaces
Vitor S. Barroso, August Geelmuyden, Zack Fifer +4
For the past two hundred years, parametric instabilities have been studied in various physical systems, such as fluids, mechanical devices and even inflationary cosmology. It was n…
Bridging Effective Field Theories and Generalized Hydrodynamics
Frederik Møller, Sebastian Erne, Norbert J. Mauser +2
Generalized Hydrodynamics (GHD) has recently been devised as a method to solve the dynamics of integrable quantum many-body systems beyond the mean-field approximation. In its orig…
Floquet engineering a bosonic Josephson junction
Si-Cong Ji, Thomas Schweigler, Mohammadamin Tajik +5
We study Floquet engineering of the tunnel coupling between a pair of one-dimensional bosonic quasi-condensates in a tilted double-well potential. By modulating the energy differen…
Observation of Light-Induced Dipole-Dipole Forces in Ultracold Atomic Gases
Mira Maiwöger, Matthias Sonnleitner, Tiantian Zhang +7
We investigate an attractive force caused by light induced dipole-dipole interactions in freely expanding ultracold 87Rb atoms. This collective, light-triggered effect results in a…
Diffraction of strongly interacting molecular Bose-Einstein condensate from standing wave light pulses
Qi Liang, Chen Li, Sebastian Erne +3
We study the effects of strong inter-particle interaction on diffraction of a Bose-Einstein condensate of molecules from a periodic potential created by pulses of a far de…
Quantum vortex instability and black hole superradiance
Sam Patrick, August Geelmuyden, Sebastian Erne +2
Vortices and black holes set the scene for many interesting dynamical processes in physics. Here, we study the dynamical instability of quantised vortices and rotational superradia…
Origin and evolution of the multiply-quantised vortex instability
Sam Patrick, August Geelmuyden, Sebastian Erne +2
We show that the dynamical instability of quantum vortices with more than a single quantum of angular momentum results from a superradiant bound state inside the vortex core. Our c…
The sound-ring radiation of expanding vortex clusters
August Geelmuyden, Sebastian Erne, Sam Patrick +2
We investigate wave-vortex interaction emerging from an expanding compact vortex cluster in a two-dimensional Bose-Einstein condensate. We adapt techniques developed for compact gr…
Relaxation in an Extended Bosonic Josephson Junction
Jan-Frederik Mennemann, Igor E. Mazets, Marine Pigneur +4
We present a detailed analysis of the relaxation dynamics in an extended bosonic Josephson junction. We show that stochastic classical field simulations using Gross-Pitaevskii equa…