Creation and precise spectroscopy of $^{86}$Sr$_2$ halo molecules

• URL: http://arxiv.org/abs/2601.06319v1
• Date: Fri, 09 Jan 2026 21:28:33 GMT
• Title: Creation and precise spectroscopy of $^{86}$Sr$_2$ halo molecules
• Authors: Brandon Iritani, Jingjing Huang, Wenwei Xu, Gisung Sim, Robert Moszynski, Tanya Zelevinsky,
• Abstract summary: Efficient molecule production via one-photon photoassociation relies on sufficient wavefunction overlap between the target vibrational states in the electronic excited- and ground-state potentials.<n>We report on the creation of $86$Sr$$ molecules in the halo state and neighboring weakly bound states.
• Score: 1.3787273141993877
• License: http://creativecommons.org/publicdomain/zero/1.0/
• Abstract: We report on the creation of $^{86}$Sr$_2$ molecules in the halo state and neighboring weakly bound states. Efficient molecule production via one-photon photoassociation relies on sufficient wavefunction overlap between the target vibrational states in the electronic excited- and ground-state potentials. Using Autler-Townes spectroscopy, transition strengths are measured to identify optimal pathways for production of weakly bound molecules. Vibrational splittings for the three least-bound vibrational states are measured, and dominant systematic uncertainties are evaluated with uncertainties below 100 Hz. From these splittings, absolute binding energies for these weakly bound vibrational states are determined. The results pave the way to a molecular isotope shift measurement with Sr$_2$.

Related papers

• High precision spectroscopy of trilobite Rydberg molecules [0.0]
  We obtain high resolution spectra of $87$Rb trilobite dimers for the principal quantum numbers $n = 22,24,25,26$, and $27$.<n>The large binding energy of the molecules in combination with a relative spectroscopic resolution of $10-4$ provides a rigorous benchmark for existing theoretical models.
  arXiv  Detail & Related papers  (2024-12-27T16:04:17Z)
• Radiative pumping vs vibrational relaxation of molecular polaritons: a bosonic mapping approach [0.0]
  We present a formalism to study molecular polaritons based on the bosonization of molecular vibronic states.<n>This formalism accommodates an arbitrary number of molecules $N$, excitations and internal vibronic structures.
  arXiv  Detail & Related papers  (2024-07-30T07:13:38Z)
• 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)
• Relaxation of maximally entangled quantum states of two nonequivalent nuclear spins in a liquid [49.1574468325115]
  We investigate the relaxation of pseudo-pure maximally entangled states (Bell states) of two nuclear spins 1H-13C belonging to a molecule in a liquid. Our relaxation measurements reveal different relaxation rates for different Bell states.
  arXiv  Detail & Related papers  (2024-03-06T18:34:24Z)
• Observation of trap-assisted formation of atom-ion bound states [0.0]
  We report on observation of weakly bound molecular states formed between one ultracold $87$Rb atom and a single trapped $88$Sr$+$ ion. We show that bound states can form efficiently in binary collisions, and enhance the rate of inelastic processes.
  arXiv  Detail & Related papers  (2022-08-14T19:39:09Z)
• 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)
• Ultracold $^{88}\rm{Sr}_2$ molecules in the absolute ground state [0.0]
  We report efficient all-optical creation of an ultracold gas of alkaline-earth-metal dimers in their absolute ground state. Our results pave the way for the use of alkaline-earth-metal dimers for high-precision spectroscopy.
  arXiv  Detail & Related papers  (2021-08-12T23:33:17Z)
• Characterization of the lowest excited-state ro-vibrational level of $^{23}$Na$^{87}$Rb [2.0575351445652057]
  We investigate the lowest ro-vibrational level of the $b3Pi$ state with high resolution laser spectroscopy. This electronic spin-forbidden $X1Sigma+ leftrightarrow b3Pi$ transition features a nearly diagonal Franck-Condon factor.
  arXiv  Detail & Related papers  (2021-08-02T04:28:53Z)
• Visualizing spinon Fermi surfaces with time-dependent spectroscopy [62.997667081978825]
  We propose applying time-dependent photo-emission spectroscopy, an established tool in solid state systems, in cold atom quantum simulators. We show in exact diagonalization simulations of the one-dimensional $t-J$ model that the spinons start to populate previously unoccupied states in an effective band structure. The dependence of the spectral function on the time after the pump pulse reveals collective interactions among spinons.
  arXiv  Detail & Related papers  (2021-05-27T18:00:02Z)
• Collective spontaneous emission of two entangled atoms near an oscillating mirror [50.591267188664666]
  We consider the cooperative spontaneous emission of a system of two identical atoms, interacting with the electromagnetic field in the vacuum state. Using time-dependent theory, we investigate the spectrum of the radiation emitted by the two-atom system. We show that it is modulated in time, and that the presence of the oscillating mirror can enhance or inhibit the decay rate.
  arXiv  Detail & Related papers  (2020-10-07T06:48:20Z)
• Transition strength measurements to guide magic wavelength selection in optically trapped molecules [0.0]
  We show that measurements of vibronic line strengths in weakly and deeply bound $88$Sr$$ molecules allow unambiguous identification of vibrational quantum numbers. We demonstrate Rabi oscillations between far-separated vibrational states that persist for nearly 100 ms.
  arXiv  Detail & Related papers  (2020-05-25T20:57:06Z)

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.