8 citations · 23 across the 12 of their papers we have counts for
13 papers
Sub-barrier peaks in atom-atom-ion three-body recombination
Fabian Thielemann, Joachim Siemund, Tobias Schaetz +1
Hybrid atom-ion experiments have recently entered the few-partial wave regime in which magnetically tunable Feshbach resonances dominate the three-body loss dynamics. This necessit…
Variational non-gaussian approach to interacting spin-boson models
João Pedro Mendonça, Yao Wang, Krzysztof Jachymski
We apply a hybrid variational framework to interacting spin-boson Hamiltonians, targeting regimes where simulations are limited by the unbounded bosonic Hilbert space and strong ma…
Quantum statistics on atom-ion Feshbach resonances
Joachim Siemund, Fabian Thielemann, Jonathan Grieshaber +5
We investigate three-body recombination in a hybrid atom-ion system consisting of a single trapped Ba ion immersed in a two-component Fermi gas of Li atoms near an atom-ion Fes…
Effects of interaction range on the mean-field dynamics of Bose polarons
Piotr Wysocki, Ubaldo Cavazos Olivas, Marek Tylutki +1
We consider the three-dimensional Bose polaron problem in the regime of finite range interactions and competing length scales. Working in the reference frame of the impurity, we st…
Quantum engineering with ultracold polar molecules using trap-induced resonances
Sakthikumaran Ravichandran, Piotr Kulik, Krzysztof Jachymski
Polar molecules represent a promising platform for quantum simulation and computation protocols. Highly controllable arrays of optical tweezers are now accessible in experiments, a…
Controlled pairing symmetries in a Fermi-Hubbard ladder with band flattening
J. P. Mendonça, S. Biswas, M. Dziurawiec +6
Band flattening has been identified as key ingredient to correlation phenomena in Moiré materials and beyond. Here, we examine strongly repulsive fermions on a ladder -- a minimal…
Magnetic Feshbach resonances in Ba+Li collisions due to strong spin-orbit coupling
Masato Morita, Joachim Siemund, Wei Wu +8
We report a pronounced dependence of magnetic Feshbach resonance spectra on the initial hyperfine-Zeeman state of Li in ultracold Ba+Li collisions. The measured num…
Dynamics of a Mobile Ion in a Bose-Einstein Condensate
Piotr Wysocki, Marek Tylutki, Krzysztof Jachymski
Characterization of the dynamics of an impurity immersed in a quantum medium is vital for fundamental understanding of matter as well as applications in modern day quantum technolo…
Effective Interactions in Quasi-One-Dimensional Dipolar Quantum Gases
Michał Zdziennicki, Mateusz Ślusarczyk, Krzysztof Pawłowski +1
Ultracold dipolar atoms and molecules provide a flexible quantum simulation platform for studying strongly interacting many-body systems. Determining microscopic Hamiltonian parame…
Role of Matter Interactions in Superradiant Phenomena
João Pedro Mendonça, Krzysztof Jachymski, Yao Wang
The superradiant phenomenon, usually described by the Dicke model, is a hallmark of strong light-matter interaction. We explore how matter-matter interactions influence this phenom…
Exploring atom-ion Feshbach resonances below the s-wave limit
Fabian Thielemann, Joachim Siemund, Daniel von Schoenfeld +5
Revealing the quantum properties of matter requires a high degree of experimental control accompanied by a profound theoretical understanding. At ultracold temperatures, quantities…
Josephson dynamics and localization revivals in ultradilute quantum liquids
Piotr Wysocki, Krzysztof Jachymski, Grigori E. Astrakharchik +1
We study the Josephson junction made of a one-dimensional ultradilute quantum liquid in a double-well potential. We analyze the dynamics as a function of the interaction strength a…
Modified mean field ansatz for charged polarons in a Bose-Einstein condensate
Ubaldo Cavazos Olivas, Luis A. Peña Ardila, Krzysztof Jachymski
Ionic Bose polarons are quantum entities emerging from the interaction between an ion and a Bose-Einstein condensate (BEC), featuring long-ranged interactions that can compete with…