Molecular optomechanics with atomic antennas

• URL: http://arxiv.org/abs/2412.02106v1
• Date: Tue, 03 Dec 2024 03:00:03 GMT
• Title: Molecular optomechanics with atomic antennas
• Authors: Mikolaj K. Schmidt, Alexander A. High, Michael J. Steel,
• Abstract summary: A germanium-vacancy defect in diamond can efficiently mediate the excitation process. At low temperatures, GeV exhibits low dissipation, allowing it to be efficiently populated by the incident field. We show that atomic antenna-enhanced Raman scattering can be distinguished from conventional surface-enhanced Raman scattering.
• Score: 44.99833362998488
• License:
• 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, GeV exhibits low dissipation, allowing it to be efficiently populated by the incident field, resulting in a thousand-fold increase in the efficiency of Raman scattering. Additionally, we show that atomic antenna-enhanced Raman scattering can be distinguished from conventional SERS by tracing the dependence of Stokes intensity on input power, and the pronounced antibunching of the Raman emission.

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