An adjustable-length cavity and Bose-Einstein condensate apparatus for multimode cavity QED

TL;DR

This paper introduces a versatile cavity QED system with an adjustable-length cavity that can operate in single-mode or multimode configurations, enabling advanced studies of quantum soft matter and neuromorphic systems.

Contribution

It presents a novel cavity QED setup with tunable cavity length, allowing access to both single-mode and multimode regimes for Bose-Einstein condensates.

Findings

Successful coupling of atomic ensembles in both cavity configurations

Demonstration of intracavity BEC confinement using optical traps

Potential for exploring complex quantum soft matter phenomena

Abstract

We present a novel cavity QED system in which a Bose-Einstein condensate (BEC) is trapped within a high-finesse optical cavity whose length may be adjusted to access both single-mode and multimode configurations. We demonstrate the coupling of an atomic ensemble to the cavity in both configurations. The atoms are confined either within an intracavity far-off-resonance optical dipole trap (FORT) or a crossed optical dipole trap via transversely oriented lasers. Multimode cavity QED provides fully emergent and dynamical optical lattices for intracavity BECs. Such systems will enable explorations of quantum soft matter, including superfluid smectics, superfluid glasses, and spin glasses as well as neuromorphic associative memory.