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arXiv · 1912.05247

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

Rasmus Høy Jensen·Erika Janitz·Yannik Fontana·Yi He·Olivier Gobron·Ilya P. Radko·Mihir Bhaskar·Ruffin Evans·César Daniel Rodríguez Rosenblueth·Lilian Childress·Alexander Huck·Ulrik Lund Andersen
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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 $\approx11{,}000$ 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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Rasmus Høy Jensen, Erika Janitz, Yannik Fontana, Yi He, Olivier Gobron, Ilya P. Radko, Mihir Bhaskar, Ruffin Evans, César Daniel Rodríguez Rosenblueth, Lilian Childress, Alexander Huck, Ulrik Lund Andersen. 2020-05-25. Cavity-Enhanced Photon Emission from a Single Germanium-Vacancy Center in a Diamond Membrane. https://doi.org/10.1103/physrevapplied.13.064016

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