Cavity-based single atom preparation and high-fidelity hyperfine state readout

Details Cavity-based single atom preparation and high-fidelity hyperfine state readout Cavity-based single atom preparation and high-fidelity hyperfine state readout

2010-02-23

arxiv.org/abs/1002.4424v1

Phys. Rev. Lett. 104, 203602 (2010)

Physics

Quantum Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.104.203602

We prepare and detect the hyperfine state of a single 87Rb 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 read-out time of 100 microseconds. The atom is still trapped after detection.

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