Fully quantum description of the four-wave mixing contribution to correlated Stokes-anti-Stokes scattering

• URL: http://arxiv.org/abs/2507.18751v1
• Date: Thu, 24 Jul 2025 19:03:05 GMT
• Title: Fully quantum description of the four-wave mixing contribution to correlated Stokes-anti-Stokes scattering
• Authors: Raul Corrêa, Marcelo F. Santos, Carlos H. Monken, Ado Jorio,
• Abstract summary: Stokes-anti-Stokes scattering can generate entangled photon pairs.<n>Stokes-anti-Stokes scattering is a promising tool for quantum optical technologies.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The process in which Raman scattering produces correlated Stokes and anti-Stokes radiation is known as Stokes-anti-Stokes (SaS) scattering. It has been shown recently that this process can generate entangled photon pairs, making it a promising tool for quantum optical technologies, but a proper quantum theoretical description was lacking. In this paper, a fully quantum derivation of the electric polarization in a medium with vibrational Raman response, with quantized electromagnetic fields, is developed. Using quantum perturbation theory for Heisenberg operators, we find the solution for the material electric polarization and show that the correlated SaS scattering appears in the first order of perturbation, corresponding to a four-wave mixing phenomenon. We also discuss how to construct the third-order non-linear optical susceptibility for the SaS scattering from the quantum formalism, and show that it coincides with the one derived for classical fields in stimulated Raman.

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