Operation and On-Chip Integration of Cavity-QED-Based Detectors for Single Atoms and Molecules
Abstract
A new experimental platform for studies of transport and quantum-limited measurements of cold, trapped atomic gases was constructed. Using microfabrication processes, a silicon wafer was micromachined to allow for deposition of micrometer-scale electromagnet wires and for the integration of closely spaced, highly reflective optical mirrors. With this device, nanokelvin-temperature atomic gases were produced and placed with nanometer precision within a high-finesse optical resonator, and to construct a cavity optomechanical system with ultracold atomic gases, with the goals of understanding how to conduct quantum-limited measurements of the motion of a macroscopic mechanical object and characterizing the new phenomena arising in such a hybrid optomechanical quantum system. Key results include the tuning between linear and quadratic optomechanical regimes, allowing one to measure either the displacement or the strain of a compressible cantilever; the first characterization of optomechanical effects in the quadratic coupling regime; and quantitative matching between experimental observations and simple theoretical predictions that establish the validity of this innovative use of cold atomic gases.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 2010
- Accession Number
- ADA523323
Entities
People
- Dan Stamper-Kurn
Organizations
- University of California, Berkeley