期刊
NEW JOURNAL OF PHYSICS
卷 20, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/aaa63d
关键词
optical vortices; optical angular momentum; quantum selection rules; ion traps; Rabi oscillations
资金
- US Army Research Office [W911NF-16-1-0452]
- Gus Weiss Endowment of The George Washington University
- Office of the Director of National Intelligence [W911NF-16-1-0070]
- National Science Foundation [PHY-1516509]
- Humboldt Foundation
- Bunge and Born Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [1516509] Funding Source: National Science Foundation
Weanalyze the multipole excitation of atoms with twisted light, i.e, by a vortex light field that carries orbital angular momentum. A single trapped Ca-40(+) ion serves as a localized and positioned probe of the exciting field. We drive theS(1/2) -> D-5/2 transition and observe the relative strengths of different transitions, depending on the ion's transversal position with respect to the center of the vortex light field. On the other hand, transition amplitudes are calculated for a twisted light field in form of a Bessel beam, a Bessel-Gauss and a Laguerre-Gauss mode. Analyzing experimental obtained transition amplitudes we find agreement with the theoretical predictions at a level of better than 3%. Finally, we propose measurement schemes with two-ion crystals to enhance the sensing accuracy of vortex modes in future experiments.
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