Abstract
We observe strong collective coupling between an optical cavity and the forbidden spin singlet to triplet optical transition to in an ensemble of . Despite the transition being 1000 times weaker than a typical dipole transition, we observe a well-resolved vacuum Rabi splitting. We use the observed vacuum Rabi splitting to make nondestructive measurements of atomic population with the equivalent of projection-noise limited sensitivity between subsequent measurements and with minimal heating [ (photon recoils)/atom]. This technique may be used to enhance the performance of optical lattice clocks by generating entangled states and reducing dead time.
- Received 19 June 2015
- Corrected 5 February 2016
DOI:https://doi.org/10.1103/PhysRevA.93.023804
©2016 American Physical Society
Physics Subject Headings (PhySH)
Corrections
5 February 2016