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

Abstract

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.

5 pages, 4 figures

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• Strong atom-field coupling for Bose-Einstein condensates in an optical cavity on a chip
• Controlled exchange interaction between pairs of neutral atoms in an optical lattice
• Normal-mode spectroscopy of a single bound atom-cavity system
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Cited by in corpus (5)

• Feedback Cooling of a Single Neutral Atom
• Highly-efficient state-selective sub-microsecond photoionization detection of single atoms
• Projective measurement of a single nuclear spin qubit by using two-mode cavity QED
• Quantum-noise quenching in atomic tweezers
• Measuring the internal state of a single atom without energy exchange