Trapped-Ion State Detection through Coherent Motion
| Autor: | David J. Wineland, David R. Leibrandt, Chin-Wen Chou, Michael J. Thorpe, Till Rosenband, David Hume |
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| Rok vydání: | 2011 |
| Předmět: |
Physics
Quantum Physics Zeeman effect Atomic Physics (physics.atom-ph) FOS: Physical sciences General Physics and Astronomy Ion trapping Physics - Atomic Physics Ion symbols.namesake Physics::Plasma Physics symbols Spontaneous emission Physics::Atomic Physics Atomic physics Quantum Physics (quant-ph) Spectroscopy Coherent spectroscopy Ground state Excitation |
| Zdroj: | Physical Review Letters. 107 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.107.243902 |
| Popis: | We demonstrate a general method for state detection of trapped ions that can be applied to a large class of atomic and molecular species. We couple a "spectroscopy" ion (Al+) to a "control" ion (Mg+) in the same trap and perform state detection through off-resonant laser excitation of the spectroscopy ion that induces coherent motion. The motional amplitude, dependent on the spectroscopy ion state, is measured either by time-resolved photon counting, or by resolved sideband excitations on the control ion. The first method provides a simplified way to distinguish "clock" states in Al+, which avoids ground state cooling and sideband transitions. The second method reduces spontaneous emission and optical pumping on the spectroscopy ion, which we demonstrate by nondestructively distinguishing Zeeman sublevels in the 1S0 ground state of Al+. Comment: 5 pages, 3 figures. Replaced with published version |
| Databáze: | OpenAIRE |
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