Zobrazeno 1 - 10
of 369
pro vyhledávání: '"Busch, Thomas"'
Lieb excitations are fundamental to the understanding of the low energy behaviour of many-body quantum gases. Here we study the spectral function of a Tonks-Girardeau gas in a finite sized Kronig-Penney potential and show that the Lieb-I and Lieb-II
Externí odkaz:
http://arxiv.org/abs/2410.13302
We study $N$ fermionic impurities in a one-dimensional lattice bosonic bath at unit filling. Using DMRG and mixed boundary conditions -- closed for bosons, open for fermions -- we find an $N$-polaron ground state replacing phase separation at high in
Externí odkaz:
http://arxiv.org/abs/2409.13785
We explore the ground states and dynamics of ultracold atomic droplets in the crossover region from three to two dimensions by solving the two-dimensional and the quasi two-dimensional extended Gross-Pitaevskii equations numerically and with a variat
Externí odkaz:
http://arxiv.org/abs/2407.16383
Autor:
Anh-Tai, Tran Duong, Fogarty, Thomás, de María-García, Sergi, Busch, Thomas, García-March, Miguel A.
We theoretically demonstrate the feasibility of creating Bell states in multi-component ultra-cold atomic gases by solely using the ability to control the inter-particle interactions via Feshbach resonances. For this we consider two distinguishable i
Externí odkaz:
http://arxiv.org/abs/2406.06966
We unravel the ground state properties and emergent non-equilibrium dynamics of a mixture consisting of a few spin-polarized fermions embedded in a two-dimensional bosonic quantum droplet. For an increasingly attractive droplet-fermion interaction we
Externí odkaz:
http://arxiv.org/abs/2405.12466
We study the interaction of emitters with a composite waveguide formed from two parallel optical nanofibers in currently unexplored regimes of experimental importance for atomic gases or solid-state emitters. Using the exact dyadic Green's function w
Externí odkaz:
http://arxiv.org/abs/2405.06168
Publikováno v:
Phys. Rev. Res. 6, L042010 (2024)
We study Thouless pumping and arresting of gap solitons in a two-component Bose gas loaded into an optical superlattice. We show that, depending on the atomic interactions and chemical potentials, the two solitons can be simultaneously pumped or trap
Externí odkaz:
http://arxiv.org/abs/2404.13823
Publikováno v:
Phys. Rev. Research 6, L032040 (2024)
Strongly correlated impurities immersed in a Bose-Einstein condensate (BEC) can form a periodic structure of tightly localized single atoms due to competing inter- and intra-species interactions, leading to a self-organized pinned state. In this work
Externí odkaz:
http://arxiv.org/abs/2402.11802
Shortcuts to adiabaticity (STA) are powerful tools that can be used to control quantum systems with high fidelity. They work particularly well for single particle and non-interacting systems which can be described exactly and which possess invariant
Externí odkaz:
http://arxiv.org/abs/2402.00349
We propose using the dynamical invariant also known as the Lewis-Riesenfeld invariant, to speed-up the equilibration of a driven open quantum system. This allows us to reverse engineer the time-dependent master equation that describes the dynamics of
Externí odkaz:
http://arxiv.org/abs/2401.11659