Integrating cavity quantum electrodynamics and ultracold-atom chips with on-chip dielectric mirrors and temperature stabilization

TL;DR

This paper reports the development of an integrated atom chip with high-finesse optical cavities, enabling strong coupling for cavity QED experiments, with advanced temperature stabilization for reliable operation.

Contribution

The authors present a novel integration of cavity QED components with ultracold-atom chips, including on-chip dielectric mirrors and high-bandwidth temperature stabilization.

Findings

Fabricated a high-finesse optical resonator on an atom chip.

Achieved cavity mirror stabilization with servo bandwidth over 100 kHz.

Demonstrated potential for strong atom-photon interactions in integrated devices.

Abstract

We have fabricated an atom chip device which combines the circuitry for magnetic trapping of cold atoms with high-finesse optical resonators suitable for cavity QED in the single-atom strong coupling regime. Fabry-Perot optical resonators with finesse F > 2 X 10^5 were formed between a micropatterned on-chip planar mirror with lateral dimension of < 100 um and a curved mirror suspended above the chip. The strong and rapid thermal coupling between on-chip electrical and optical elements was utilized to stabilize the cavity mirror separation with servo bandwidth exceeding 100 kHz during simulated operation of the atom chip.