Generation of polarization and coherence non-separable states in twisted partially coherent vector light

Non-separable optical beams have garnered significant attention due to their ability to mimic quantum entanglement in classical optics, unlocking interesting applications. However, a key limitation has been their confinement to fully coherent light beams. In this work, we introduce a new, to the best of our knowledge, concept called the non-separable partially coherent vector (NSPCV) beam, which exhibits unique non-separable correlation between polarization and partially coherent spatial modes, a correlation marked by the presence of the twist phase in the coherence degree of freedom. We investigated their transmission properties using polystyrene bead suspensions. Results show NSPCV beams exhibit superior stability compared to Gaussian beams. This work not only broadens the scope of non-separable optical beams but also promises higher robustness in strongly scattering media.