High Bandwidth Atomic Detection at the Single-Atom Level and Cavity Quantum Electrodynamics on an Atom Chip

摘要

The overall objective of this seedling grant was to integrate high- finesse optical cavities onto atom chips so as to advance the application of cavity quantum electrodynamics (CQED) to ultracold atoms for applications in sensing quantum information technology exploration and basic science. We have accomplished all of the experimental objectives for this project. Extensive research and testing of various microfabrication methods yielded a robust recipe for integrating small-scale high-finesse mirrors onto sapphire and glass substrates. The challenges of temperature variations on and vibrational coupling to the chip were addressed effectively. We fabricated a sapphire- substrate atom chip with integrated Fabry-Perot cavity and a temperature stabilization system. The high-finesse cavity achieving the single-atom strong-coupling regime for rubidium atoms, and was kept locked during a simulated operation of the atom chip.