Two-photon photoassociation spectroscopy of the ${}^2{\Sigma }^{+}$ YbLi molecular ground state

Abstract

We report on measurements of the binding energies of several weakly bound vibrational states of the paramagnetic ${}^{174}$Yb${}^6$Li molecule in the electronic ground state using two-photon spectroscopy in an ultracold atomic mixture confined in an optical dipole trap. We theoretically analyze the experimental spectrum to obtain an accurate description of the long-range potential of the ground state molecule. Based on the measured binding energies, we arrive at an improved value of the interspecies $s$-wave scattering length $a_{s0}=30$ $a_0$. Employing coherent two-photon spectroscopy we also observe the creation of ''dark'' atom-molecule superposition states in the heteronuclear Yb-Li system. This work is an important step towards the efficient production of ultracold YbLi molecules via association from an ultracold atomic mixture.

arXiv comment10 pages, 7 figures, 2 tables

References in corpus (32)

• CODATA Recommended Values of the Fundamental Physical Constants: 2010
• A High Phase-Space-Density Gas of Polar Molecules
• Cold and Ultracold Molecules: Science, Technology, and Applications
• A toolbox for lattice spin models with polar molecules
• Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state
• Ultracold Dipolar Gas of Fermionic ${}^{23}$Na${}^{40}$K Molecules in their Absolute Ground State
• Creation of ultracold ${}^{87}$RbCs molecules in the rovibrational ground state
• Creation of an ultracold gas of ground-state ${}^{23}{\mathrm{Na}}^{87}\mathrm{Rb}$ molecules
• Precision Test of Mass Ratio Variations with Lattice-Confined Ultracold Molecules
• Laser Cooling of Optically Trapped Molecules
• Long-Lived Ultracold Molecules with Electric and Magnetic Dipole Moments
• Atom-molecule dark states in a Bose-Einstein condensate
• Quantum degenerate mixtures of alkali and alkaline-earth-like atoms
• Time-reversal symmetry violation in molecules induced by nuclear magnetic quadrupole moments
• Inelastic collisions of ultra-cold heteronuclear molecules in an optical trap
• Creation of ultracold Sr2 molecules in the electronic ground state
• Two-Element Mixture of Bose and Fermi Superfluids
• Strongly interacting ultracold polar molecules
• Observation of Feshbach resonances between alkali and closed-shell atoms
• Magnetically tunable Feshbach resonances in ultracold Li-Yb mixtures
• The prospects of forming ultracold molecules in ${}^2\Sigma$ states by magnetoassociation of alkali-metal atoms with Yb
• Sympathetic cooling in an optically trapped mixture of alkali and spin-singlet atoms
• Ytterbium in quantum gases and atomic clocks: van der Waals interactions and blackbody shifts
• Ab initio properties of Li-Group-II molecules for ultracold matter studies
• Two-photon photoassociation spectroscopy of CsYb: ground-state interaction potential and interspecies scattering lengths
• Efficient production of long-lived ultracold Sr${}_2$ molecules
• The RbSr ${}^2{\Sigma }^{+}$ ground state investigated via spectroscopy of hot & ultracold molecules
• Photoassociative production of ultracold heteronuclear YbLi* molecules
• Magnetic field dependent interactions in an ultracold Li-Yb(${}^3$P${}_2$) mixture
• Mott-Insulator-Aided Detection of Ultra-Narrow Feshbach Resonances
• Relativistic many-body calculations of van der Waals coefficients for Yb-Li and Yb-Rb dimers
• Two-photon photoassociation spectroscopy of an ultracold heteronuclear molecule

Cited by in corpus (11)

• Feshbach resonances in $p$-wave three-body recombination within Fermi-Fermi mixtures of open-shell ${}^6$Li and closed-shell ${}^{173}$Yb atoms
• Electron electric dipole moment searches using clock transitions in ultracold molecules
• Diatomic molecules of alkali-metal and alkaline-earth-metal atoms: interaction potentials, dipole moments, and polarizabilities
• Controlling the ac Stark effect of RbCs with dc electric and magnetic fields
• Ultracold ${}^{88}{\mathrm{Sr}}_2$ molecules in the absolute ground state
• Active stabilization of kilogauss magnetic fields to the ppm level for magnetoassociation on ultranarrow Feshbach resonances
• Detecting Entrainment in Fermi-Bose Mixtures
• Feshbach resonances and molecule formation in ultracold mixtures of Rb and Yb(${}^3$P) atoms
• DiPolMol-Py: A Python package for calculations for ${}^2\Sigma$ ground-state molecules
• An approximation scheme and non-Hermitian re-normalization for description of atom-field system evolution
• Magnetic Feshbach resonances between atoms in ${}^2$S and ${}^3$P${}_0$ states: mechanisms and dependence on atomic properties