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arXiv · 2412.02106

Molecular optomechanics with atomic antennas

Mikolaj K. Schmidt·Alexander A. High·Michael J. Steel
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Abstract

A typical surface-enhanced Raman scattering (SERS) system relies on deeply subwavelength field localization in nanoscale plasmonic cavities to enhance both the excitation and emission of Raman-active molecules. Here, we demonstrate that a germanium-vacancy (GeV) defect in diamond can efficiently mediate the excitation process, by acting as a bright atomic antenna. At low temperatures, the GeV's low dissipation allows it to be efficiently populated by the incident field, resulting in a thousand-fold increase in the efficiency of Raman scattering. We show that atomic antenna-enhanced Raman scattering can be distinguished from conventional SERS by tracing the dependence of Stokes intensity on input power.

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Mikolaj K. Schmidt, Alexander A. High, Michael J. Steel. 2024-12-03. Molecular optomechanics with atomic antennas. https://arxiv.org/abs/2412.02106

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