The role of Coulomb anti-blockade in the photoassociation of long-range
Rydberg molecules
- URL: http://arxiv.org/abs/2211.04744v1
- Date: Wed, 9 Nov 2022 08:37:01 GMT
- Title: The role of Coulomb anti-blockade in the photoassociation of long-range
Rydberg molecules
- Authors: Michael Peper, Martin Trautmann, and Johannes Deiglmayr
- Abstract summary: ionic products, created by the decay of a long-range Rydberg molecule, modify the excitation spectrum of surrounding ground-state atoms.
Pulsed-field ionisation typically doesn't discriminate between the ionization of a long-range Rydberg molecule and an isolated Rydberg atom.
We unambiguously identify the signatures of this detection mechanism in the photoassociation of long-range Rydberg molecules bound below nP_3/2 Rydberg states of cesium.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We present a new mechanism contributing to the detection of photoassociated
long-range Rydberg molecules via pulsed-field ionization: ionic products,
created by the decay of a long-range Rydberg molecule, modify the excitation
spectrum of surrounding ground-state atoms and facilitate the excitation of
further atoms into Rydberg states by the photoassociation light. Such an
ion-mediated excitation mechanism has been previously called "Coulomb
anti-blockade". Pulsed-field ionisation typically doesn't discriminate between
the ionization of a long-range Rydberg molecule and an isolated Rydberg atom,
and thus the number of atomic ions detected by this mechanism is not
proportional to the number of long-range Rydberg molecules present in the probe
volume. By combining high-resolution UV and RF spectroscopy of a dense,
ultracold gas of cesium atoms, theoretical modeling of the molecular level
structures of long-range Rydberg molecules bound below nP_3/2 Rydberg states of
cesium, and a rate model of the photoassociation and decay processes, we
unambiguously identify the signatures of this detection mechanism in the
photoassociation of long-range Rydberg molecules bound below atomic asymptotes
with negative Stark shifts.
Related papers
- Ultralong-range Cs-RbCs Rydberg molecules: non-adiabaticity of dipole
moments [41.94295877935867]
We consider ultralong-range polyatomic Rydberg molecules formed by combining a Rydberg cesium atom and a ground-state RbCs molecule.
We explore the regime where the charge-dipole interaction due to the Rydberg electron with the diatomic polar molecule couples the quantum defect Rydberg states Cs(ns) to the nearest hydrogenic manifold.
arXiv Detail & Related papers (2024-01-17T22:05:01Z) - 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) - Observation of Rydberg blockade due to the charge-dipole interaction
between an atom and a polar molecule [52.77024349608834]
We demonstrate Rydberg blockade due to the charge-dipole interaction between a single Rb atom and a single RbCs molecule confined in optical tweezers.
Results open up the prospect of a hybrid platform where quantum information is transferred between individually trapped molecules using Rydberg atoms.
arXiv Detail & Related papers (2023-03-10T18:41:20Z) - Correlated steady states and Raman lasing in continuously pumped and
probed atomic ensembles [68.8204255655161]
We consider an ensemble of Alkali atoms that are continuously optically pumped and probed.
Due to the collective scattering of photons at large optical depth, the steady state of atoms does not correspond to an uncorrelated tensor-product state.
We find and characterize regimes of Raman lasing, akin to the model of a superradiant laser.
arXiv Detail & Related papers (2022-05-10T06:54:54Z) - 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) - Photodissociation of long-range Rydberg molecules [0.0]
We photoassociate K2 37P molecules with highly entangled electronic and nuclear spins of the two bound atoms.
We demonstrate a full hyperfine-spin flip of a free ground-state atom through the interaction with a Rydberg atom.
arXiv Detail & Related papers (2020-07-07T12:01:36Z) - Heteronuclear long-range Rydberg molecules [0.0]
We present the formation of homonuclear Cs2, K2, and heteronuclear CsK long-range Rydberg molecules in a dual-species magneto-optical trap for 39K and 133Cs by one-photon UV photoassociation.
The different ground-state-density dependence of homo- and heteronuclear photoassociation rates and the detection of stable molecular ions resulting from auto-ionization provide an unambiguous assignment.
arXiv Detail & Related papers (2020-05-26T12:55:25Z) - Observation of the Dipole Blockade Effect in Detecting Rydberg Atoms by
the Selective Field Ionization Method [0.0]
The excitation of one atom to a Rydberg state blocks the excitation of other atoms due to the shift in the collective energy levels of interacting Rydberg atoms.
We investigated the spectra of the three-photon laser excitation of cold Rb Rydberg atoms in a magneto-optical trap.
arXiv Detail & Related papers (2020-04-21T12:09:33Z) - 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) - Formation of ultracold ion pairs through long-range Rydberg molecules [0.0]
We propose a new approach to excite ion-pair states of ultracold dimers.
First long-range Rydberg molecules are formed by photoassociation, driven by stimulated emission towards the ion-pair state.
We discuss potential applications for the study of strongly correlated plasmas consisting of oppositely charged particles of equal or similar mass.
arXiv Detail & Related papers (2020-01-31T10:31:09Z)
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.