Single-molecule strong optomechanical regimes in SERS via hybrid plasmonic cavities

Miguel Á. Martínez-García; Johannes Feist; Diego Martín-Cano

Single-molecule strong optomechanical regimes in SERS via hybrid plasmonic cavities

Quantum Physics 2026-08-04 v1 Mesoscale and Nanoscale Physics Optics

Authors: Miguel Á. Martínez-García , Johannes Feist , Diego Martín-Cano

Abstract

We identify enhanced strong coherent Surface-Enhanced Raman Scattering (SERS) interactions facilitated by hybridized metallo-dielectric cavities with a resonant fluorescent molecule. By illuminating a detuned electronic transition near saturation via a narrowband hybrid plasmonic mode, we observe enhanced splittings in the Stokes and anti-Stokes spectra, revealing strong optomechanical coupling and nonlinear vibrational modifications at intensities far below irreversible SERS damage thresholds. We compute the second-order photon correlations that allows identifying the nonclassical character associated to these strong optomechanical interactions and SERS configurations that enables them to optically characterize the anharmonic character of the vibrational modes.

Keywords

surface-enhanced Raman scattering optomechanics plasmonic cavities single molecule nonclassical light vibrational spectroscopy

Cite

@article{arxiv.2608.03307,
  title  = {Single-molecule strong optomechanical regimes in SERS via hybrid plasmonic cavities},
  author = {Miguel Á. Martínez-García and Johannes Feist and Diego Martín-Cano},
  journal= {arXiv preprint arXiv:2608.03307},
  year   = {2026}
}