Work

Quantum Mechanical Description of Raman Scattering from Molecules in Plasmonic Cavities

Year: 2016

Type: article

Abstract: Plasmon-enhanced Raman scattering can push single-molecule vibrational spectroscopy beyond a regime addressable by classical electrodynamics. We employ a quantum electrodynamics (QED) description of the coherent interaction of plasmons and molecular vibrations that reveal the emergence of nonlinearities in the inelastic response of the system. For realistic situations, we predict the onset of phonon-stimulated Raman scattering and a counterintuitive dependence of the anti-Stokes emission on the frequency of excitation. We further show that this QED framework opens a venue to analyze the correlations of photons emitted from a plasmonic cavity.

Source: ACS Nano

DOI: 10.1021/acsnano.6b02484

Authors: Mikolaj K. Schmidt, Ruben Esteban, Alejandro González-Tudela, Geza Giedke, Javier Aizpurua

Institutions: Material Physics Center, Donostia International Physics Center, Max Planck Institute of Quantum Optics, Ikerbasque

Language: English

Topic: Plasmonic and Surface Plasmon Research

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Eusko Jaurlaritza, Ministerio de Educación, Cultura y Deporte, Ministerio de Economía y Competitividad, Directorate-General for Research and Innovation

Awards: G118149953, G3572050066, G3655455311, G7777584771, G8208474734