Production of rovibronic ground state RbCs molecules via two-photon cascade decay

Abstract

We report the production of ultracold RbCs molecules in the rovibronic ground state, i.e., $X^1{\Sigma }^{+}(v=0,J=0)$, by short-range photoassociation to the $2^3{\Pi }_0$ state followed by spontaneous emission. We use narrowband depletion spectroscopy to probe the distribution of rotational levels formed in the $X^1{\Sigma }^{+}(v=0)$ state. We conclude, based on selection rules, that the primary decay route to $X^1{\Sigma }^{+}(v=0)$ is a two-step cascade decay that leads to as much as $33\%$ branching into the $J=0$ rotational level. The experimental simplicity of our scheme opens up the possibility of easier access to the study and manipulation of ultracold heteronuclear molecules in the rovibronic ground state.

arXiv comment5 pages, 4 figures

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Cited by in corpus (15)

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• Probing Fundamental Symmetries of Deformed Nuclei in Symmetric Top Molecules
• Modeling sympathetic cooling of molecules by ultracold atoms
• Ultracold Molecule Assembly with Photonic Crystals
• Dynamical process of optically trapped singlet ground state ${}^{85}$Rb${}^{133}$Cs molecules produced via short-range photoassociation
• Continuous Production of Rovibronic Ground State RbCs Molecules via Short-Range Photoassociation to the $b^3{\Pi }_1-c^3{\Sigma }_1^{+}-B^1{\Pi }_1$ States
• Coupled spin-vortex pair in dipolar spinor Bose-Einstein condensates
• Microwave coherent control of ultracold ground-state molecules formed by short-range photoassociation
• Spin-orbit-coupled Bose-Einstein condensates of rotating polar molecules
• The $d{}^3\Pi$ state of LiRb
• Classical crystal formation of dipoles in two dimensions
• Spinor Bose-Einstein Condensates of Rotating Polar Molecules
• Long-range interactions between ultracold atoms and molecules
• Microwave-assisted coherent control of ultracold polar molecules with a ladder-type rotational states