Optomechanical Effects in Nanocavity-enhanced Resonant Raman Scattering of a Single Molecule

• URL: http://arxiv.org/abs/2210.02639v1
• Date: Thu, 6 Oct 2022 02:12:07 GMT
• Title: Optomechanical Effects in Nanocavity-enhanced Resonant Raman Scattering of a Single Molecule
• Authors: Xuan-Ming Shen, Yuan Zhang, Shunping Zhang, Yao Zhang, Qiu-Shi Meng, Guangchao Zheng, Siyuan Lv, Luxia Wang, Roberto A. Boto, Chongxin Shan, Javier Aizpurua
• Abstract summary: We address the optomechanical effects in surface-enhanced resonant Raman scattering (SERRS) from a single molecule in a nano-particle on mirror (NPoM) nanocavity. We develop a quantum master equation theory, which combines macroscopic quantum electrodynamics and electron-vibration interaction within the framework of open quantum system theory. We use electromagnetic simulations and time-dependent density functional theory calculations to study the SERRS of a methylene blue molecule in a realistic NPoM nanocavity.
• Score: 7.8701096149524865
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In this article, we address the optomechanical effects in surface-enhanced resonant Raman scattering (SERRS) from a single molecule in a nano-particle on mirror (NPoM) nanocavity by developing a quantum master equation theory, which combines macroscopic quantum electrodynamics and electron-vibration interaction within the framework of open quantum system theory. We supplement the theory with electromagnetic simulations and time-dependent density functional theory calculations in order to study the SERRS of a methylene blue molecule in a realistic NPoM nanocavity. The simulations allow us not only to identify the conditions to achieve conventional optomechanical effects, such as vibrational pumping, non-linear scaling of Stokes and anti-Stokes scattering, but also to discovery distinct behaviors, such as the saturation of exciton population, the emergence of Mollow triplet side-bands, and higher-order Raman scattering. All in all, our study might guide further investigations of optomechanical effects in resonant Raman scattering.

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