Vibrationally highly excited trilobite molecules stabilized by non-adiabatic coupling

• URL: http://arxiv.org/abs/2502.15509v2
• Date: Mon, 21 Apr 2025 14:03:22 GMT
• Title: Vibrationally highly excited trilobite molecules stabilized by non-adiabatic coupling
• Authors: Rohan Srikumar, Markus Exner, Richard Blättner, Peter Schmelcher, Matthew T. Eiles, Herwig Ott,
• Abstract summary: We report on the observation of highly excited vibrational states of a trilobite ultralong-range Rydberg molecule in $87$Rb.<n>The existence and observed stability of these states requires the almost complete suppression of the adiabatic decay pathway.<n>This is the first direct measurement of beyond-Born-Oppenheimer physics in long-range Rydberg molecules.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We report on the observation of highly excited ($\nu \sim 100)$ vibrational states of a trilobite ultralong-range Rydberg molecule in $^{87}$Rb. These states manifest spectroscopically in a regularly spaced series of peaks red-detuned from the $25f_{7/2}$ dissociation threshold. The existence and observed stability of these states requires the almost complete suppression of the adiabatic decay pathway induced by the $P$-wave shape resonance of Rb. This stabilization is predicted to occur only for certain Rydberg levels where the avoided crossing between trilobite and $P$-wave dominated butterfly potential energy curves nearly vanishes, allowing the vibrational states to diabatically traverse the crossing with almost unit probability. This is the first direct measurement of beyond-Born-Oppenheimer physics in long-range Rydberg molecules, and paves the way for future experiments to access and manipulate wavepackets formed from high-lying vibrational states.

Related papers

• Rayleigh-Taylor, Kelvin-Helmholtz and immiscible to miscible quenching instabilities in binary Bose-Einstein condensates [0.0]
  We investigate three kinds of instabilities in binary immiscible Bose-Einstein condensate, considering rubidium isotopes $85$Rb and $87$Rb confined in two-dimensional circular box. RT and Kelvin-Helmholtz (KH) instability types are studied under strong perturbations. Our numerical simulations show that all such instability dynamics are dominated by large vortex productions and sound-wave propagations.
  arXiv  Detail & Related papers  (2025-03-17T23:02:44Z)
• Non-adiabatic couplings as a stabilization mechanism in long-range Rydberg molecules [0.0]
  In alkaline Rydberg molecules, bound vibrational states exist even when these potential wells are disrupted by level repulsion. By comparing the molecular states calculated within the Born-Oppenheimer approximation, we can assess the effects of non-adiabatic coupling on vibrational energies and lifetimes.
  arXiv  Detail & Related papers  (2024-08-27T09:47:56Z)
• Internal diffraction dynamics of trilobite molecules [0.0]
  Trilobite molecules are ultralong-range Rydberg molecules formed when a high angular momentum Rydberg electron scatters off of a ground-state atom.<n>We analyze the vibrational motion of these molecules using a framework of adiabatic wavepacket propagation dynamics.
  arXiv  Detail & Related papers  (2024-08-04T20:05:55Z)
• 2500 vibronic eigenstates of the NO$_3$ radical [49.1574468325115]
  We revisit the vibronic spectrum associated with the electronic $tilde X 2A'$ state. For the antisymmetric bending motion we find remarkably large symmetry-induced level splittings. We discuss non-negligible nonadiabatic effects and show that the Born-Oppenheimer approximation leads to significant errors in the spectrum.
  arXiv  Detail & Related papers  (2024-07-03T18:00:00Z)
• Flipping electric dipole in the vibrational wave packet dynamics of carbon monoxide [0.0]
  Recently Rydberg atom-ion bound states have been observed using a high resolution ion microscope. We investigate whether a similar behavior can also occur for ground state diatomic molecules.
  arXiv  Detail & Related papers  (2024-03-06T21:32:22Z)
• Towards the "puzzle" of Chromium dimer Cr$_2$: predicting the Born-Oppenheimer rovibrational spectrum [44.99833362998488]
  This paper calculates the potential energy curve for the state $X1Sigma+$ of the Cr$$$ dimer. It is found for the first time for the whole range of internuclear distances $R$.
  arXiv  Detail & Related papers  (2024-01-06T17:00:12Z)
• Metastable supersolid in spin-orbit coupled Bose-Einstein condensates [5.232018788493378]
  Supersolid is a special state of matter with both superfluid properties and spontaneous modulation of particle density. We study a one-dimensional supersolid whose characteristic wave number $k$ deviates from $k_m$, i.e., the one at ground state. We find that this class of supersolids can still be stable if their wave numbers fall in the range $k_c1kk_c2$, with two thresholds $k_c1$ and $k_c2$.
  arXiv  Detail & Related papers  (2023-01-15T13:35:50Z)
• Phase diagram of Rydberg-dressed atoms on two-leg triangular ladders [50.591267188664666]
  We investigate the phase diagram of hard-core bosons in a triangular ladder with next-to-nearest-neighbor interaction along each leg. For weak interactions, Abelian bosonization predicts a spin density wave and a fully gapless Luttinger liquid phase. The competition with the zigzag interaction generates a charge density wave, a 'polarized holonic' phase, and a crystalline phase at the filling 2/5.
  arXiv  Detail & Related papers  (2022-07-01T12:49:04Z)
• High-resolution 'magic'-field spectroscopy on trapped polyatomic molecules [62.997667081978825]
  Rapid progress in cooling and trapping of molecules has enabled first experiments on high resolution spectroscopy of trapped diatomic molecules. Extending this work to polyatomic molecules provides unique opportunities due to more complex geometries and additional internal degrees of freedom.
  arXiv  Detail & Related papers  (2021-10-21T15:46:17Z)
• Rovibrational structure of the Ytterbium monohydroxide molecule and the $\mathcal{P}$,$\mathcal{T}$-violation searches [68.8204255655161]
  The energy gap between levels of opposite parity, $l$-doubling, is of a great interest. The influence of the bending and stretching modes on the sensitivities to the $mathcalP$,$mathcalT$-violation requires a thorough investigation.
  arXiv  Detail & Related papers  (2021-08-25T20:12:31Z)
• Long-lived period-doubled edge modes of interacting and disorder-free Floquet spin chains [68.8204255655161]
  We show that even in the absence of disorder, and in the presence of bulk heating, $pi$ edge modes are long lived. A tunneling estimate for the lifetime is obtained by mapping the stroboscopic time-evolution to dynamics of a single particle in Krylov subspace.
  arXiv  Detail & Related papers  (2021-05-28T12:13:14Z)
• Non-trivial quantum magnetotransport oscillations in pure and robust topological $\alpha$-Sn films [58.720142291102135]
  We report experimental evidence of topological Dirac fermion charge carriers in pure and robust $alpha$-Sn films grown on InSb substrates. A surface band, with low carrier density and high mobility, is identified as the origin of the observed Shubnikov -- de Haas oscillations.
  arXiv  Detail & Related papers  (2020-02-27T16:46:11Z)

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.