Cavity-Enhanced Photon Emission from a Single Germanium-Vacancy Center in a Diamond Membrane

2019/12/31 by Rasmus Høy Jensen, Erika Janitz, Yannik Fontana +9 · 1 citation
Physics and Astronomy · #physics.optics #quant-ph

paper · pdf · doi:10.1103/physrevapplied.13.064016

published as Phys. Rev. Applied 13, 064016 (2020) · 7 pages, 6 figures

arxiv created 2020/05/25 · arxiv updated 2020/06/16

Abstract

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⁺¹¹_-15-fold increase in the spectral density of emission. This work sets the stage for cryogenic experiments, where we predict a measurable increase in the spontaneous emission rate.

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