The nitrogen-vacancy center in diamond has been explored extensively as a light-matter interface for quantum information applications, however it is limited by low coherent photon emission and spectral instability. Here, we present a promising interface based on an alternate defect with superior optical properties (the germanium-vacancy) coupled to a finesse 11,000 fiber cavity, resulting in a 31+12
−15 -fold increase in the spectral density of emission. This work sets the stage for cryogenic experiments, where we predict a factor of 20+7−10 increase in the spontaneous emission rate.
|Publication status||Submitted - 2020|
Jensen, R. H.
, Janitz, E., Fontana, Y. L.
, He, Y., Gobron, O., Radko, I., ... Andersen, U. L.
(2020). Cavity-Enhanced Photon Emission from a Single Germanium-Vacancy Center in a Diamond Membrane
. Manuscript submitted for publication.