TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.15.6.220
TI  - An association sequence suitable for producing ground-state RbCs molecules in optical lattices
PY  - 2023/12/01
UR  - https://scipost.org/SciPostPhys.15.6.220
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 15
IS  - 6
SP  - 220
A1  - Das, Arpita
AU  - Gregory, Philip D.
AU  - Takekoshi, Tetsu
AU  - Fernley, Luke
AU  - Landini, Manuele
AU  - Hutson, Jeremy M.
AU  - Cornish, Simon L.
AU  - Nägerl, Hanns-Christoph
AB  - We identify a route for the production of $^{87}$Rb$^{133}$Cs molecules in the $X^1\Sigma^+$ rovibronic ground state that is compatible with efficient mixing of the atoms in optical lattices. We first construct a model for the excited-state structure using constants found by fitting to spectroscopy of the relevant $a\,^3 \Sigma^+ → b\, ^3\Pi_1$ transitions at 181.5 G and 217.1 G. We then compare the predicted transition dipole moments from this model to those found for the transitions that have been successfully used for STIRAP at 181.5 G. We form molecules by magnetoassociation on a broad interspecies Feshbach resonance at 352.7 G and explore the pattern of Feshbach states near 305 G. This allows us to navigate to a suitable initial state for STIRAP by jumping across an avoided crossing with radiofrequency radiation. We identify suitable transitions for STIRAP at 305 G. We characterize these transitions experimentally and demonstrate STIRAP to a single hyperfine level of the ground state with a one-way efficiency of 85(4)%.
ER  -

@Article{10.21468/SciPostPhys.15.6.220,
	title={{An association sequence suitable for producing ground-state RbCs molecules in optical lattices}},
	author={Arpita Das and Philip D. Gregory and Tetsu Takekoshi and Luke Fernley and Manuele Landini and Jeremy M. Hutson and Simon L. Cornish and Hanns-Christoph Nägerl},
	journal={SciPost Phys.},
	volume={15},
	pages={220},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.15.6.220},
	url={https://scipost.org/10.21468/SciPostPhys.15.6.220},
}