Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:2110.07845 · Physical Chemistry Chemical Physics

Empirical LiK excited state potentials: connecting short range and near dissociation expansions

Sofia Botsi, Anbang Yang, Mark Lam, Sambit Bikas Pal, Sunil Kumar, Markus Debatin, Kai Dieckmann

Published Jan 1, 2022• 1 citation
arXivHTMLPDF

Abstract

High-resolution excited state spectroscopy of ultracold LiK molecules. The fully empirical curve obtained serves as a starting point for the identification of a spectroscopic pathway to the absolute dipolar ground state.
DOI
10.1039/d1cp04707h

Related papers

LiK B1Π potential: combining short and long-range data

Sofia Botsi, Anbang Yang, Sunil Kumar +3 more

We present spectroscopic measurements of the long range states of the 6 Li 40 K molecule near its Li(4 2 S1/2) + K(4 2 P3/2) asymptote which in combination with existing data in the short range lead to the full characterization of the B 1 Π potential with high spectroscopic resolution.This survey was conducted in the context of identifying a suitable pathway for the efficient two-photon transfer to the absolute ro-vibronic ground state of 6 Li 40 K heteronuclear dimers.

Asian Spectroscopy Conference (ASC)•Oct 27, 2020•0 citations

Perturbation-assisted observation of the lowest vibrational level of the b 3 Π 0 state of ultracold LiK molecules

Anbang Yang, Xiaoyu Nie, Hao Lin Yu +6 more

triplet excited potential of LiK, and benefits future applications of ultracold LiK isotopologues in quantum simulation and quantum computation that demand long coherence times.

Physical Chemistry Chemical Physics•Dec 22, 2025•1 citation

Radiative Lifetimes of LiK[sup +], LiRb[sup +] and LiCs[sup +] in the 2[sup 2]Σ[sup +] State

Chedli Ghanmi, Hamid Berriche, George Maroulis +1 more

The adiabatic potential energy curves and the spectroscopic constants of the ground and the first excited states of LiK+, LiRb+ and LiCs+ ionic molecules have been performed. The transition dipole moment between the ground (X2Σ+) and the first excited (22Σ+) state have been determined for each ionic molecule. We have used an ab initio approach involving non‐empirical pseudo‐potentials with core valence effects taken into account through parameterized l‐dependent polarization potentials. Our spectroscopic constants of the ground and the first excited states are in good agreement with the available theoretical works. The potential energy curves and the transition dipole moment are used to estimate the radiative lifetimes of the vibrational levels of the 22Σ+ state for the first time. In addition to the bound‐bound contribution, the bound‐free term has been evaluated exactly and using the Franck‐Condon (FC) approximation and added to the total radiative lifetime. These data can help experimentalists to optimize photoassociative formation of ultracold molecules and their longevity in a trap or in an optical lattice.

AIP conference proceedings•Jan 1, 2009•3 citations

Observation of Rydberg Transitions in Resonance Fluorescence of Ultracold Lithium-7 Atoms

Vladimir A. Sautenkov, Sergey A. Saakyan, E V Vilshanskaya +2 more

Journal of Russian Laser Research•Mar 1, 2015•12 citations

Resonant Coupling in the Heteronuclear Alkali Dimers for Direct Photoassociative Formation of X(0,0) Ultracold Molecules

W. C. Stwalley, J. Banerjee, M. Bellos +3 more

Promising pathways for photoassociative formation of ultracold heteronuclear alkali metal dimers in their lowest rovibronic levels (denoted X(0,0)) are examined using high-quality ab initio calculations of potential energy curves currently available. A promising pathway for KRb, involving the resonant coupling of the 2(1)Pi and 1(1)Pi states just below the lowest excited asymptote (K(4s) + Rb(5p(1/2))), is found to occur also for RbCs and less promisingly for KCs also. The resonant coupling of the 3(1)Sigma(+) and 1(1)Pi states, also just below the lowest excited asymptote, is found to be promising for LiNa, LiK, and LiRb and less promising for LiCs and KCs. Direct photoassociation to the 1(1)Pi state near dissociation appears promising in the final dimers NaK, NaRb, and NaCs, although detuning more than 100 cm(-1) below the lowest excited asymptote may be required.

arXiv:0909.4347•The Journal of Physical Chemistry A•Dec 7, 2009•40 citations

Potassium atoms feel a distant attraction

Anonymous

The atoms in highly excited vibrational states of a diatomic molecule can be quite far apart near their maximum excursion. Physicists are now using laser spectroscopy to carefully measure the long-range effective interaction between potassium atoms in these states—an essential parameter to understanding ultracold atomic collisions.

Physics•Jul 28, 2008•0 citations
The adiabatic potential energy curves and the spectroscopic constants of the ground and the first excited states of LiK+, LiRb+ and LiCs+ ionic molecules have been performed. The transition dipole moment between the ground (X2Σ+) and the first excited (22Σ+) state have been determined for each ionic molecule. We have used an ab initio approach involving non‐empirical pseudo‐potentials with core valence effects taken into account through parameterized l‐dependent polarization potentials. Our spectroscopic constants of the ground and the first excited states are in good agreement with the available theoretical works. The potential energy curves and the transition dipole moment are used to estimate the radiative lifetimes of the vibrational levels of the 22Σ+ state for the first time. In addition to the bound‐bound contribution, the bound‐free term has been evaluated exactly and using the Franck‐Condon (FC) approximation and added to the total radiative lifetime. These data can help experimentalists to optimize photoassociative formation of ultracold molecules and their longevity in a trap or in an optical lattice.
Promising pathways for photoassociative formation of ultracold heteronuclear alkali metal dimers in their lowest rovibronic levels (denoted X(0,0)) are examined using high-quality ab initio calculations of potential energy curves currently available. A promising pathway for KRb, involving the resonant coupling of the 2(1)Pi and 1(1)Pi states just below the lowest excited asymptote (K(4s) + Rb(5p(1/2))), is found to occur also for RbCs and less promisingly for KCs also. The resonant coupling of the 3(1)Sigma(+) and 1(1)Pi states, also just below the lowest excited asymptote, is found to be promising for LiNa, LiK, and LiRb and less promising for LiCs and KCs. Direct photoassociation to the 1(1)Pi state near dissociation appears promising in the final dimers NaK, NaRb, and NaCs, although detuning more than 100 cm(-1) below the lowest excited asymptote may be required.