LAUSR

Abstract The nonclassical properties of the different modes in the stimulated, spontaneous, and partially spontaneous multi-photon pump non-degenerate hyper-Raman processes are investigated by obtaining a perturbative analytic operator solution of a completely quantum mechanical Hamiltonian of this process, which can be considered as the most general Raman process. The nonclassical nature of the multi-photon pump non-degenerate hyper-Raman processes is witnessed by means of intermodal entanglement of different orders as well as lower- and higher-order photon antibunching. Interestingly, manifesting the multi-photon nature of the pump modes, a bunch of nonclassicality involving them are observed due to self-interaction of various pump modes. Further, it is shown that the obtained solution is very general in nature as the solutions of various other Raman processes (e.g., degenerate hyper-Raman and stimulated Raman processes) can be obtained as special cases of the present solution, and thus the nonclassical properties of those processes can also be witnessed.