Journal
NEW JOURNAL OF PHYSICS
Volume 22, Issue 6, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/ab8265
Keywords
optical nanofibre; electric quadrupole; rubidium; cold atoms
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Funding
- Okinawa Institute of Science and Technology Graduate University
- JSPS [19K05316]
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Light guided by an optical nanofibre has a very steep evanescent field gradient extending from the fibre surface. This gradient can be exploited to drive electric quadrupole transitions in nearby quantum emitters. In this paper, we report on the observation of the 5S(1/2)-> 4D(3/2)electric quadrupole transition at 516.6 nm (in vacuum) in laser-cooled(87)Rb atoms using only a few mu W of laser power propagating through an optical nanofibre embedded in the atom cloud. This work extends the range of applications for optical nanofibres in atomic physics to include more fundamental tests such as high-precision measurements of parity non-conservation.
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