A pathway to ultracold bosonic (NaK)-Na-23-K-39 ground state molecules
Year: 2019
Authors: Voges K. K., Gersema P., Hartmann T., Schulze T.A., Zenesini A., Ospelkaus S.
Autors Affiliation: Institut für Quantenoptik, Leibniz Universität Hannover, D-30167, Hannover, Germany
Abstract: We spectroscopically investigate a pathway for the conversion of (NaK)-Na-23-K-39 Feshbach molecules into rovibronic ground state molecules via stimulated Raman adiabatic passage. Using photoassociation spectroscopy from the diatomic scattering threshold in the a(3)Sigma(+) potential, we locate the resonantly mixed electronically excited intermediate states vertical bar B-1 Pi, v = 8 > and vertical bar c(3)Sigma(+), v = 30 > which, due to their singlet-triplet admixture, serve as an ideal bridge between predominantly a(3)Sigma(+) Feshbach molecules and pure X-1 Sigma(+) ground state molecules. We investigate their hyperfine structure and present a simple model to determine the singlet-triplet coupling of these states. Using Autler-Townes spectroscopy, we locate the rovibronic ground state of the (NaK)-Na-23-K-39 molecule (|X-1 Sigma(+), v = 0, N = 0 >) and the second rotationally excited stateN.=. 2 to unambiguously identify the ground state. Wealso extract the effective transition dipole moment from the excited to the ground state. Our investigations result in a fully characterized scheme for the creation of ultracold bosonic (NaK)-Na-23-K-39 ground state molecules.
Journal/Review: NEW JOURNAL OF PHYSICS
Volume: 21(12) Pages from: 123034-1 to: 123034-7
More Information: Wethank Eberhard Tiemann for enlightening discussions and suggestions. Wegratefully acknowledge financial support from the European Research Council through ERC Starting Grant POLAR and from the Deutsche Forschungsgemeinschaft (DFG) through CRC1227 (DQ-mat), project A03 and FOR2247, project E5. KKVand PG thank the Deutsche Forschungsgemeinschaft for financial support through Research Training Group (RTG) 1991.KeyWords: STIRAP; molecular spectroscopy; ultracold polar molecules; bosonic quantum gasesDOI: 10.1088/1367-2630/ab5f31ImpactFactor: 3.539Citations: 7data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-10-06References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here