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arXiv · 0706.2450

Quantum Control of the Hyperfine Spin of a Cs Atom Ensemble

Souma Chaudhury·Seth Merkel·Tobias Herr·Andrew Silberfarb·Ivan H. Deutsch·Poul S. Jessen
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Abstract

We demonstrate quantum control of a large spin-angular momentum associated with the F=3 hyperfine ground state of 133Cs. A combination of time dependent magnetic fields and a static tensor light shift is used to implement near-optimal controls and map a fiducial state to a broad range of target states, with yields in the range 0.8-0.9. Squeezed states are produced also by an adiabatic scheme that is more robust against errors. Universal control facilitates the encoding and manipulation of qubits and qudits in atomic ground states, and may lead to improvement of some precision measurements.

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Souma Chaudhury, Seth Merkel, Tobias Herr, Andrew Silberfarb, Ivan H. Deutsch, Poul S. Jessen. 2007-06-16. Quantum Control of the Hyperfine Spin of a Cs Atom Ensemble. https://doi.org/10.1103/physrevlett.99.163002

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