32 citations · 118 across the 11 of their papers we have counts for
11 papers
Ground state of the Hubbard model with spin-dependent linear potential
Jacek Dobrzyniecki, Thomas Busch
We investigate the competition between attractive spin-spin interactions and spin-separating external forces in the ground state of a one-dimensional Fermi-Hubbard model. We consid…
Tunable two-species spin models with Rydberg atoms in circular and elliptical states
Jacek Dobrzyniecki, Paula Heim, Michał Tomza
We propose a scheme for constructing versatile quantum simulators using ultracold Rydberg atoms in long-lived circular and elliptical states. By exciting different subspaces of int…
Quantum simulation of the central spin model with a Rydberg atom and polar molecules in optical tweezers
Jacek Dobrzyniecki, Michał Tomza
Central spin models, where a single spinful particle interacts with a spin environment, find wide application in quantum information technology and can be used to describe, e.g., t…
Unconventional pairing in few-fermion systems tuned by external confinement
Jacek Dobrzyniecki, Giuliano Orso, Tomasz Sowiński
We study the ground-state properties of a two-component one-dimensional system of a few ultra-cold fermions with attractive interactions. We show that, by ramping up an external po…
Two Rydberg-dressed atoms escaping from an open well
Jacek Dobrzyniecki, Tomasz Sowiński
A comprehensive analysis of the dynamics of two Rydberg-dressed particles (bosons or fermions) tunneling from a potential well into open space is provided. We show that the dominan…
Simulating artificial one-dimensional physics with ultra-cold fermionic atoms: three exemplary themes
Jacek Dobrzyniecki, Tomasz Sowiński
For over twenty years, ultra-cold atomic systems have formed an almost perfect arena for simulating different quantum many-body phenomena and exposing their non-obvious and very of…
Momentum correlations of a few ultra-cold bosons escaping from an open well
Jacek Dobrzyniecki, Tomasz Sowiński
The dynamical properties of a one-dimensional system of two and three bosons escaping from an open potential well are studied in terms of the momentum distributions of particles. I…
Dynamics of a few interacting bosons escaping from an open well
Jacek Dobrzyniecki, Tomasz Sowiński
The dynamics of a few ultra-cold bosons tunneling from a one-dimensional potential well into open space is studied. In such a system several decay channels can be distinguished, ea…
Effective three-body interactions for bosons in a double-well confinement
Jacek Dobrzyniecki, Xikun Li, Anne E. B. Nielsen +1
When describing the low-energy physics of bosons in a double-well potential with a high barrier between the wells and sufficiently weak atom-atom interactions, one can to a good ap…
Effective two-mode description of a few ultra-cold bosons in a double-well potential
Jacek Dobrzyniecki, Tomasz Sowiński
We present a construction of an improved two-mode model for modeling the dynamics of interacting ultra-cold bosons confined in a one-dimensional double well trap. Unlike in the typ…
Exact dynamics of two ultra-cold bosons confined in a one-dimensional double-well potential
Jacek Dobrzyniecki, Tomasz Sowiński
The dynamics of two ultra-cold bosons confined in a one-dimensional double-well potential is studied. We compare the exact dynamics governed by a full two-body Hamiltonian with the…