Zobrazeno 1 - 10
of 216
pro vyhledávání: '"Kollath, Corinna"'
Autor:
Klemmer, Nick, Fleper, Janek, Jonas, Valentin, Sheikhan, Ameneh, Kollath, Corinna, Köhl, Michael, Bergschneider, Andrea
We investigate the experimental control of pair tunneling in a double-well potential using Floquet engineering. We demonstrate a crossover from a regime with density-assisted tunneling to dominant pair tunneling by tuning the effective interactions.
Externí odkaz:
http://arxiv.org/abs/2404.08482
We analyze the relaxation dynamics in an open system, composed by a quantum gas of bosons in a lattice interacting via both contact and global interactions. We report the onset of periodic oscillations of the atomic coherences exhibiting hallmarks of
Externí odkaz:
http://arxiv.org/abs/2403.20096
The statistical properties of level spacings provide valuable insights into the dynamical properties of a many-body quantum systems. We investigate the level statistics of the Fermi-Hubbard model with dimerized hopping amplitude and find that after t
Externí odkaz:
http://arxiv.org/abs/2309.07116
Publikováno v:
Phys. Rev. B 108, 224429 (2023)
We study the excitation spectrum of the one-dimensional spin-1/2 XXZ chain with antiferromagnetic Ising anisotropy across a magnetic quantum phase transition induced by the application of a site-dependent transverse magnetic field. Motivated by the c
Externí odkaz:
http://arxiv.org/abs/2306.14742
Publikováno v:
Phys. Rev. A 108, 023307 (2023)
We investigate the transport properties of a Fermi-Hubbard chain with an impurity which is formed by a site with a periodically modulated chemical potential. We determine the momentum resolved transmission through this impurity in dependence of the m
Externí odkaz:
http://arxiv.org/abs/2305.16743
Publikováno v:
Phys. Rev. B 106, 245121 (2022)
We show the presence of Majorana edge modes in an interacting fermionic ladder with spin in a number conserved setting. The interchain single particle hopping is suppressed and only a pair hopping is present between the different chains of the ladder
Externí odkaz:
http://arxiv.org/abs/2208.09346
Autor:
De Marco, Jeannette, Tolle, Luisa, Halati, Catalin-Mihai, Sheikhan, Ameneh, Läuchli, Andreas M., Kollath, Corinna
Publikováno v:
Phys. Rev. Research 4, 033119 (2022)
In this work we analyze the spectral level statistics of the one-dimensional ionic Hubbard model, the Hubbard model with an alternating on-site potential. In particular, we focus on the statistics of the gap ratios between consecutive energy levels.
Externí odkaz:
http://arxiv.org/abs/2203.05379
We investigate the Fermi-Hubbard model with a Floquet-driven impurity in the form of a local time-oscillating potential. For strong attractive interactions a stable formation of pairs is observed. These pairs show a completely different transmission
Externí odkaz:
http://arxiv.org/abs/2112.07964
We investigate the response to radio-frequency driving of an ultracold gas of attractively interacting fermions in a one-dimensional optical lattice. We study the system dynamics by monitoring the driving-induced population transfer to a third state,
Externí odkaz:
http://arxiv.org/abs/2109.00651
Publikováno v:
Phys. Rev. Research 4, L012015 (2022)
In dissipative quantum systems, strong symmetries can lead to the existence of conservation laws and multiple steady states. In this work we investigate a strong symmetry for bosonic atoms coupled to an optical cavity, an experimentally relevant syst
Externí odkaz:
http://arxiv.org/abs/2102.02537