44 citations · 249 across the 19 of their papers we have counts for
19 papers
Coupled-channels method for the scattering hypervolume in ultracold atomic three-body collisions
P. J. P. Kersbergen, J. van de Kraats, D. J. M. Ahmed-Braun +1
We introduce a novel coupled-channels method for elastic three-body scattering in systems of identical bosonic alkali-metal atoms. The approach relies on the numerically exact two-…
Non-equilibrium dynamics and atom-pair coherence in strongly interacting Bose-Fermi mixtures
J. van de Kraats, D. J. M. Ahmed-Braun, V. E. Colussi +1
Theoretical treatments of non-equilibrium dynamics in strongly interacting Bose-Fermi mixtures are complicated by the inherent non-Gaussian nature of the vacuum two-body physics, i…
Accurate simulation of Efimov physics in ultracold atomic gases with realistic three-body multichannel interactions
J. van de Kraats, S. J. J. M. F. Kokkelmans
We give a detailed and self-contained description of a recently developed theoretical and numerical method for the simulation of three identical bosonic alkali-metal atoms near a F…
Emergent inflation of the Efimov spectrum under three-body spin-exchange interactions
J. van de Kraats, D. J. M. Ahmed-Braun, J. -L. Li +1
We resolve the unexpected and long-standing disagreement between experiment and theory in the Efimovian three-body spectrum of Li-7, commonly referred to as the lithium few-body pu…
Resonance triplet dynamics in the quenched unitary Bose gas
J. van de Kraats, D. J. M. Ahmed-Braun, V. E. Colussi +1
The quenched unitary Bose gas is a paradigmatic example of a strongly interacting out-of-equilibrium quantum system, whose dynamics become difficult to describe theoretically due t…
Phonon-assisted coherent transport of excitations in Rydberg-dressed atom arrays
Arkadiusz Kosior, Servaas Kokkelmans, Maciej Lewenstein +2
Polarons, which arise from the self-trapping interaction between electrons and lattice distortions in a solid, have been known and extensively investigated for nearly a century. Ne…
Resonance-facilitated three-channel p-wave scattering
Denise Ahmed-Braun, Paul Julienne, Servaas Kokkelmans
Feshbach resonances of arbitrary width are typically described in terms of two-channel models. Within these models, one usually considers a single dressed resonance, with the optio…
Hybrid Quantum Singular Spectrum Decomposition for Time Series Analysis
Jasper Johannes Postema, Pietro Bonizzi, Gideon Koekoek +2
Classical data analysis requires computational efforts that become intractable in the age of Big Data. An essential task in time series analysis is the extraction of physically mea…
Robust control and optimal Rydberg states for neutral atom two-qubit gates
Madhav Mohan, Robert de Keijzer, Servaas Kokkelmans
We investigate the robustness of two-qubit gates to deviations of experimental controls, on a neutral atom platform utilizing Rydberg states. We construct robust CZ gates - employi…
Efimovian three-body potential from broad to narrow Feshbach resonances
J. van de Kraats, D. J. M. Ahmed-Braun, J. -L. Li +1
We analyse the change in the hyperradial Efimovian three-body potential as the two-body interaction is tuned from the broad to narrow Feshbach resonance regime. Here, it is known f…
Bose-Einstein condensation of Efimovian triples in the unitary Bose gas
S. Musolino, H. Kurkjian, M. Van Regemortel +3
In an atomic Bose-Einstein condensate quenched to the unitary regime, we predict the sequential formation of a significant fraction of condensed pairs and triples. At short-distanc…
Multichannel effects in the Efimov regime from broad to narrow Feshbach resonances
T. Secker, D. J. M. Ahmed-Braun, P. M. A. Mestrom +1
We study Efimov physics of three identical bosons with pairwise multichannel interactions for Feshbach resonances of adjustable width. We find that the two-body multichannel nature…
The multichannel nature of three-body recombination for ultracold K
T. Secker, J. -L. Li, P. M. A. Mestrom +1
We develop a full multichannel spin model in momentum space to investigate three-body recombination of identical alkali-metal atoms colliding in a magnetic field. The model combine…
Cumulant theory of the unitary Bose gas: Prethermal and Efimovian dynamics
V. E. Colussi, H. Kurkjian, M. Van Regemortel +4
We study the quench of a degenerate ultracold Bose gas to the unitary regime, where interactions are as strong as allowed by quantum mechanics. We lay the foundations of a cumulant…
Pair formation in quenched unitary Bose gases
S. Musolino, V. E. Colussi, S. J. J. M. F. Kokkelmans
We study a degenerate Bose gas quenched to unitarity by solving a many-body model including three-body losses and correlations up to second order. As the gas evolves in this strong…
Bunching, clustering, and the buildup of few-body correlations in a quenched unitary Bose gas
V. E. Colussi, B. E. van Zwol, J. P. D'Incao +1
We study the growth of two- and three-body correlations in an ultracold Bose gas quenched to unitarity. This is encoded in the dynamics of the two- and three-body contacts analyzed…
From coherent collective excitation to Rydberg blockade on an atom chip
Julius de Hond, Rick van Bijnen, S. J. J. M. F. Kokkelmans +3
Using time-resolved measurements, we demonstrate coherent collective Rydberg excitation crossing over into Rydberg blockade in a dense and ultracold gas trapped at a distance of 10…
Dynamical formation of the unitary Bose gas
V. E. Colussi, S. Musolino, S. J. J. M. F. Kokkelmans
We study the structure of a Bose-condensed gas after quenching interactions to unitarity. Using the method of cumulants, we decompose the evolving gas in terms of clusters. Within…
Feshbach resonances in ultracold gases
S. J. J. M. F. Kokkelmans
In this chapter, we describe scattering resonance phenomena in general, and focus on the mechanism of Feshbach resonances, for which a multi-channel treatment is required. We deriv…