Enhancements to cavity quantum electrodynamics system

TL;DR

This paper details planned upgrades to a cavity QED system, including a higher finesse optical cavity and improved cold atom source, aiming to enhance experimental control and performance.

Contribution

It introduces specific design improvements for the cavity and atom source, including a new cavity with higher finesse and simulation-based enhancements to atomic beam control.

Findings

Design and construction plans for a high-finesse cavity

Simulation results for 2-D optical molasses effectiveness

Assessment of all-optical atomic beam focusing feasibility

Abstract

We show the planned upgrade of a cavity QED experimental apparatus. The system consists of an optical cavity and an ensemble of ultracold $^{85}$Rb atoms coupled to its mode. We propose enhancements to both. First, we document the building process for a new cavity, with a planned finesse of $\sim$20000. We address problems of maintaining mirror integrity during mounting and improving vibration isolation. Second, we propose improvements to the cold atom source in order to achieve better optical pumping and control over the flux of atoms. We consider a 2-D optical molasses for atomic beam deflection, and show computer simulation results for evaluating the design. We also examine the possibility of all-optical atomic beam focusing, but find that it requires unreasonable experimental parameters.