Observation of the 87Rb 5S1/2 to 4D3/2 electric quadrupole transition at 516.6 nm mediated via an optical nanofibre

Author:

Ray Tridib,Gupta Ratnesh K,Gokhroo Vandna,Everett Jesse LORCID,Nieddu Thomas,Rajasree Krishnapriya S,Chormaic Síle NicORCID

Abstract

Abstract 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 5S1/2 → 4D3/2 electric quadrupole transition at 516.6 nm (in vacuum) in laser-cooled 87Rb atoms using only a few μW 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.

Funder

Okinawa Institute of Science and Technology Graduate University

Japan Society for the Promotion of Science

Publisher

IOP Publishing

Subject

General Physics and Astronomy

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