Energy Density of Interaction Between Two Polarization-Entangled Photon Modes
M.A. Grado-Caffaro and M. Grado-Caffaro
Starting from calculating the complex-valued phase-dependent energy density relative to the nonlinear interaction between two polarization entangled photon modes and a classical pump field, a useful relationship is derived from establishing an integral inequality which involves the absolute value of the energy density in question among other quantities. In parallel, issues related to negative energy density are discussed.
Keywords: Polarization-entangled photons; Interaction energy density; Classical pump field.