Progress toward enhanced loading of NaCs molecules from dual-species atomic ensembles in tweezers

The long range dipole-dipole interactions and complex internal structure of molecules provide a promising platform for quantum simulation and quantum computation experiments. By associating individually trapped cold atoms, bi-alkali molecules can be prepared in the motional ground state of tweezers without the need for laser cooling of the molecule. However, in the current assembly procedure, thermal excitations in the constituent atoms directly translate to lower molecular creation efficiency, resulting in few ground state molecules per experimental cycle. In pursuit of a highly filled array of several hundred molecules, we propose a loading scheme leveraging shielding techniques and dynamic tweezer shaping to prepare ensembles of molecules in each tweezer and deterministically spill to prepare one molecule. We discuss a new apparatus designed and constructed to implement this scheme.