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In this article, non-classical properties of Raman modes are investigated.The original goal, actually, is to identify how and by which method we caninduce non-classicality in Raman modes. We introduce a plasmonic system inwhich Raman dye molecules are buried between two shells of the plasmonicmaterials similar to onion-like core/shell nanoparticle. This system is excitedby the entangled photons, followed by analyzing its dynamics of motion usingthe Heisenberg-Langevin equations by which the time evolution of thesignal-idler mode and Raman modes are derived. Interestingly, the entangledphotons are coupled to the plasmonic modes which are used to improve thenon-classicality. It is shown that the exciting system with the entangledphotons lead to inducing the non-classicality in Raman modes and entanglementbetween them. This behavior is attributed to the non-classicality of inputmodes that is coupled to the Raman modes considering the correlation betweenthe incident wave frequency and Raman modes frequency. Notably, these quantumproperties are dramatically affected by the environment temperature and Ramanmolecules location around the plasmonic nanoparticles. Modelling resultsdemonstrate that a temperature increase has a drastic effect on systemdynamics. Moreover, it is found that the entanglement between modes in systemsurely is affected by the coupling between the incident modes and plasmonicmodes generated by the core/shell nanoparticles. Finally, as an importantresult, it is revealed that the Raman modes such as stoke and anti-stoke modesshow a revival behavior, which is a quantum phenomenon.

Raman Modes Non-classicality through Entangled Photons Coupling to Plasmonic Modes