Making molecules by mergoassociation: the role of center-of-mass motion

TL;DR

This paper develops a theoretical framework for mergoassociation, incorporating center-of-mass motion effects, and explores its implications for molecule formation and quantum logic gate construction in various atomic systems.

Contribution

It introduces a method to include center-of-mass coupling in mergoassociation theory, extending previous models and analyzing its impact on different atomic species and experimental setups.

Findings

Center-of-mass motion significantly affects molecule formation.

Theoretical predictions for RbCs, RbSr, RbYb, CsYb systems.

Potential for using moveable traps in quantum computing.

Abstract

In mergoassociation, two atoms in separate optical traps are combined to form a molecule when the traps are merged. Previous theoretical treatments have considered only the relative motion of the atoms, neglecting coupling to the motion of the center of mass. We develop a theoretical method to include the coupling to center-of-mass motion and consider its consequences for experiments for both weak and strong coupling. We consider the example of RbCs and then extend the treatment to other systems where mergoassociation may be effective, namely RbSr, RbYb and CsYb. We consider the role of the coupling when the traps are anisotropic and the potential use of moveable traps to construct quantum logic gates.