Optical switching of resonance fluorescence from a single germanium vacancy color center in diamond

Abstract

Scalable quantum photonic networks require coherent excitation of quantum emitters. However, many solid-state systems can undergo a transition to a dark shelving state that inhibits the fluorescence. Here we demonstrate that a controlled gating using a weak non-resonant laser, the resonant excitation can be recovered and amplified for single germanium vacancies (GeVs). Employing the gated resonance excitation, we achieve optically stable resonance fluorescence of GeV centers. Our results are pivotal for the deployment of diamond color centers as reliable building blocks for scalable solid state quantum networks.

arXiv comment6 Pages, 4 figures

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• Diamond Integrated Quantum Photonics: A Review
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• Cavity-Enhanced Photon Emission from a Single Germanium-Vacancy Center in a Diamond Membrane
• Quantum interference of resonance fluorescence from Germanium-vacancy color centers in diamond
• Stimulated emission depletion spectroscopy of color centers in hexagonal boron nitride
• The physical origins of extreme cross-polarization extinction in confocal microscopy
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• Stimulated Emission Depletion Microscopy with Color Centers in Hexagonal Boron Nitride
• Lifetime-Limited and Tunable Emission from Charge-Stabilized Nickel Vacancy Centers in Diamond