Measurement of polarization group velocity dispersion in optically active and organic materials using entangled photons

Summary form only given. We adapted a quantum interferometric technique for measuring the relative delay between two oppositely polarized photons to measure the delay between right and left-polarized light in optically active materials. Measuring the delay of photons passing through a solution of organic molecules can be used to measure its concentration. A test to measure the delay between right- and left-polarized light passing through glucose is performed to demonstrate the feasibility of this method to measure concentrations of similar molecules. The setup measures the interference (intensity correlation) of two entangled photons of opposite polarization after passing through a sample.