Development of Biphoton Entangled Light Spectroscopy (BELS) using Bell pairs
This paper introduces Biphoton Entangled Light Spectroscopy (BELS), a novel quantum technique that utilizes polarization-entangled Bell pairs and coincidence measurements to distinguish material properties like birefringence and Faraday rotation through their unique transformations of the Bell state manifold, offering a new framework for characterizing quantum materials and light-matter interactions.