Dynamics of atoms within atoms
- URL: http://arxiv.org/abs/2111.05031v1
- Date: Tue, 9 Nov 2021 10:16:49 GMT
- Title: Dynamics of atoms within atoms
- Authors: S. Tiwari, F. Engel, M. Wagner, R. Schmidt, F. Meinert, and S.
W\"uster
- Abstract summary: We study the quantum-many-body dynamics of atoms moving within the Rydberg atom.
Our simulations focus in particular on the scenario of multiple sequential Rydberg excitations on the same Rubidium condensate.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Recent experiments with Bose-Einstein condensates have entered a regime in
which thousands of ground-state condensate atoms fill the Rydberg-electron
orbit. After the excitation of a single atom into a highly excited Rydberg
state, scattering off the Rydberg electron sets ground-state atoms into motion,
such that one can study the quantum-many-body dynamics of atoms moving within
the Rydberg atom. Here we study this many-body dynamics using Gross-Pitaevskii
and truncated Wigner theory. Our simulations focus in particular on the
scenario of multiple sequential Rydberg excitations on the same Rubidium
condensate which has become the standard tool to observe quantum impurity
dynamics in Rydberg experiments. We investigate to what extent such experiments
can be sensitive to details in the electron-atom interaction potential, such as
the rapid radial modulation of the Rydberg molecular potential, or p-wave shape
resonance. We demonstrate that both effects are crucial for the initial
condensate response within the Rydberg orbit, but become less relevant for the
density waves emerging outside the Rydberg excitation region at later times.
Finally we explore the local dynamics of condensate heating. We find that it
provides only minor corrections to the mean-field dynamics.
Related papers
- Observation of string breaking on a (2 + 1)D Rydberg quantum simulator [59.63568901264298]
We report the observation of string breaking in synthetic quantum matter using a programmable quantum simulator.
Our work paves a way to explore phenomena in high-energy physics using programmable quantum simulators.
arXiv Detail & Related papers (2024-10-21T22:33:16Z) - Observation of electric field induced superradiance slowdown in ultracold Rydberg atomic gases [0.4169767831866066]
Atoms excited to electronically high-lying Rydberg states decay to low-energy states through spontaneous emission processes.
We report experimental observations of a significant slowdown in superradiance upon applying an electric field.
Our numerical simulations demonstrate that superradiance decoherence is caused by the Stark shifts of the Rydberg level.
arXiv Detail & Related papers (2024-08-22T10:04:55Z) - Fragmented superconductivity in the Hubbard model as solitons in
Ginzburg-Landau theory [58.720142291102135]
Superconductivity and charge density waves are observed in close vicinity in strongly correlated materials.
We investigate the nature of such an intertwined state of matter stabilized in the phase diagram of the elementary $t$-$tprime$-$U$ Hubbard model.
We provide conclusive evidence that the macroscopic wave functions of the superconducting fragments are well-described by soliton solutions of a Ginzburg-Landau equation.
arXiv Detail & Related papers (2023-07-21T18:00:07Z) - Higher-order topological Peierls insulator in a two-dimensional
atom-cavity system [58.720142291102135]
We show how photon-mediated interactions give rise to a plaquette-ordered bond pattern in the atomic ground state.
The pattern opens a non-trivial topological gap in 2D, resulting in a higher-order topological phase hosting corner states.
Our work shows how atomic quantum simulators can be harnessed to investigate novel strongly-correlated topological phenomena.
arXiv Detail & Related papers (2023-05-05T10:25:14Z) - Spin-motion coupling in a circular Rydberg state quantum simulator: case
of two atoms [0.0]
Circular Rydberg atoms are remarkable tools for the quantum simulation of spin arrays.
We study the interplay between the spin exchange and motional dynamics in the simple case of two interacting circular Rydberg atoms confined in harmonic traps.
arXiv Detail & Related papers (2023-03-21T19:16:24Z) - Many-body radiative decay in strongly interacting Rydberg ensembles [0.0]
When atoms are excited to high-lying Rydberg states they interact strongly with dipolar forces.
We show that these interactions have also a significant impact on dissipative effects caused by the inevitable coupling of Rydberg atoms to the surrounding electromagnetic field.
We discuss how this collective dissipation - stemming from a mechanism different from the much studied super- and sub-radiance - accelerates decoherence and affects dissipative phase transitions in Rydberg ensembles.
arXiv Detail & Related papers (2022-06-06T18:30:52Z) - Anderson localization of a Rydberg electron [68.8204255655161]
Rydberg atoms inherit their level structure, symmetries, and scaling behavior from the hydrogen atom.
limit is reached by simultaneously increasing the number of ground state atoms and the level of excitation of the Rydberg atom.
arXiv Detail & Related papers (2021-11-19T18:01:24Z) - Phonon dressing of a facilitated one-dimensional Rydberg lattice gas [0.0]
We study the dynamics of a one-dimensional Rydberg lattice gas under facilitation conditions.
We analytically derive an effective Hamiltonian for the evolution of consecutive clusters of Rydberg excitations.
We show that the interaction between Rydberg excitations and lattice vibrations leads to the emergence of slowly decaying bound states.
arXiv Detail & Related papers (2021-04-22T16:29:56Z) - Exotic photonic molecules via Lennard-Jones-like potentials [48.7576911714538]
We show a novel Lennard-Jones-like potential between photons coupled to the Rydberg states via electromagnetically induced transparency (EIT)
This potential is achieved by tuning Rydberg states to a F"orster resonance with other Rydberg states.
For a few-body problem, the multi-body interactions have a significant impact on the geometry of the molecular ground state.
arXiv Detail & Related papers (2020-03-17T18:00:01Z) - High-Fidelity Entanglement and Detection of Alkaline-Earth Rydberg Atoms [48.093689931392866]
Controlled two-qubit entanglement generation has so far been limited to alkali species.
We demonstrate a novel approach utilizing the two-valence electron structure of individual alkaline-earth Rydberg atoms.
We find fidelities for Rydberg state detection, single-atom Rabi operations, and two-atom entanglement surpassing previously published values.
arXiv Detail & Related papers (2020-01-13T18:42:42Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.