Bulletin of the Russian Academy of Sciences Physics
Possibility of Generating Counterpropagating Orthogonally Polarized Modes in a Periodically Poled Nonlinear Crystal, Allowing for Diffraction and the Formation of Quantum Ghost Images
Aleksandr V. Belinsky, Ranjit Singh
Abstract
Abstract A study is performed of a degenerate parametric process in which two orthogonally polarized counterpropagating modes are generated and propagate in a periodically poled nonlinear crystal. A scheme for quantum ghost imaging is proposed. It is established that beam diffraction has a negligible effect on the second-order coefficients of correlation. This offers good prospects for the formation of high-quality ghost images, since diffraction is normally the factor that has the worst effect on their spatial resolution.