Abstract
We prepare and detect the hyperfine state of a single atom coupled to a fiber-based high-finesse cavity on an atom chip. The atom is extracted from a Bose-Einstein condensate and trapped at the maximum of the cavity field, resulting in a reproducibly strong atom-cavity coupling. We use the cavity reflection and transmission signal to infer the atomic hyperfine state with a fidelity exceeding 99.92% in a readout time of . The atom is still trapped after detection.
- Received 23 February 2010
DOI:https://doi.org/10.1103/PhysRevLett.104.203602
©2010 American Physical Society