44 citations · 225 across the 14 of their papers we have counts for
14 papers
Stationary solitons in F=1 spin-orbit coupled Bose-Einstein condensates
T. Mithun, A. R. Fritsch, G. N. Koutsokostas +3
We consider solitary wave excitations above the ground state of spin-orbit coupled Bose-Einstein condensates (SOBECs). The low energy properties of SOBECs in any of the three…
Dynamical Instability of 3d Stationary and Traveling Planar Dark Solitons
T. Mithun, A. R. Fritsch, I. B. Spielman +1
Here we revisit the topic of stationary and propagating solitonic excitations in self-repulsive three-dimensional Bose-Einstein condensates by quantitatively comparing theoretical…
Dark solitons in Bose-Einstein condensates: a dataset for many-body physics research
Amilson R. Fritsch, Shangjie Guo, Sophia M. Koh +2
We establish a dataset of over experimental images of Bose--Einstein condensates containing solitonic excitations to enable machine learning (ML) for many-body phys…
Observation of dynamical topology in 1D
G. H. Reid, Mingwu Lu, A. R. Fritsch +2
Nontrivial topology in lattices is characterized by invariants--such as the Zak phase for one dimensional (1D) lattices--derived from wave functions covering the Brillouin zone. We…
Floquet engineering topological Dirac bands
Mingwu Lu, G. H. Reid, A. R. Fritsch +2
We experimentally realized a time-periodically modulated 1D lattice for ultracold atoms featuring a pair of linear bands, each associated with a Floquet winding number: a topologic…
Combining machine learning with physics: A framework for tracking and sorting multiple dark solitons
Shangjie Guo, Sophia M. Koh, Amilson R. Fritsch +2
In ultracold-atom experiments, data often comes in the form of images which suffer information loss inherent in the techniques used to prepare and measure the system. This is parti…
Universal dynamics of a turbulent superfluid Bose gas
A. D. García-Orozco, L. Madeira, M. A. Moreno-Armijos +6
We study the emergence of universal scaling in the time-evolving momentum distribution of a harmonically trapped three-dimensional Bose-Einstein condensate, parametrically driven t…
Machine-learning enhanced dark soliton detection in Bose-Einstein condensates
Shangjie Guo, Amilson R. Fritsch, Craig Greenberg +2
Most data in cold-atom experiments comes from images, the analysis of which is limited by our preconceptions of the patterns that could be present in the data. We focus on the well…
Creating solitons with controllable and near zero velocity in Bose-Einstein condensates
A. R. Fritsch, Mingwu Lu, G. H. Reid +2
Established techniques for deterministically creating dark solitons in repulsively interacting atomic Bose-Einstein condensates (BECs) can only access a narrow range of soliton vel…
Isothermal compressibility determination across Bose-Einstein condensation
F. J. Poveda-Cuevas, P. C. M. Castilho, E. D. Mercado-Gutierrez +5
We apply the global thermodynamic variables approach to experimentally determine the isothermal compressibility parameter of a trapped Bose gas across the phase transition. W…
Matter wave speckle observed in an out-of-equilibrium quantum fluid
Pedro E. S. Tavares, Amilson R. Fritsch, Gustavo D. Telles +4
We report the results of a direct comparison of a freely expanding turbulent Bose-Einstein condensate and the propagation of an optical speckle pattern. We found remarkably similar…
Nonlinear dependence observed in quadrupolar collective excitation of a trapped BEC
A. R. Fritsch, P. E. S. Tavares, Y. R. Tonin +4
We report the experimental observation of the collective excitations induced in a magnetically trapped 87Rb Bose-Einstein condensate. Low-lying mode excitations were studied by tra…
Investigation of the momentum distribution of an excited BEC by free expansion: coupling with collective modes
A. Bahrami, P. E. S Tavares, A. R. Fritsch +4
We investigate the evolution of the momentum distribution of a Bose-Einstein condensate subjected to an external small oscillatory perturbation as a function of the in-trap evoluti…
Twisted unwinding of multi-charged quantum vortex and generation of turbulence in atomic Bose-Einstein condensates
G. D. Telles, P. E. S. Tavares, A. R. Fritsch +5
We report the observation of the twisted decay of quadruply charged vortices in an atomic Bose-Einstein condensate. Supporting numerical simulations show that the singly-charged vo…