2021/02/28 by Kishore Thapliyal, Jan Peřina, Jan Perina Jr
Computer Science · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Computer science #Epistemology #Ideal (ethics) #Pairing #Philosophy #Photon #Physics #Process (computing) #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum mechanics #Raman spectroscopy #quant-ph
paper · pdf · doi:10.1103/physreva.103.033708
published as Phys. Rev. A 103, 033708 (2021) · Conditions for having the Stokes and anti-Stokes fields composed of only photon pairs in the Raman process analogous to twin beams in parametric down-conversion are obtained. 9 figures and 17 pages
openalex publication_date 2021/03/17 · arxiv created 2021/03/25 · arxiv updated 2021/03/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A quantum model of the Raman process with the independent Stokes and anti-Stokes nonlinear interactions is developed to study nonclassical correlations between the photons in the Stokes and anti-Stokes fields. The role of the laser pump amplitude, the ratio of the Stokes and anti-Stokes coupling constants, and the population and losses of the vibrational mode in forming the correlations is elucidated. The g(2) intensity cross-correlation function, noise-reduction factor, two-mode principal squeezing variance, logarithmic negativity, nonclassicality depth, steering parameter, and the Bell parameter are analyzed side by side to shed light to the correlations between the Stokes and anti-Stokes fields. Conditions for having the Stokes and anti-Stokes fields composed of only photon pairs, similarly as it occurs in twin beams in parametric down-conversion, are revealed. They allow for nonzero mean thermal phonon numbers.