Estimation of von Neumann entropy of different light sources using array detectors

Abstract: We employ a method involving an array detector to measure the transverse spatial variation of the von Neumann Entropy (VNE) associated with the polarization state of light for different light sources including the coherent light from a diode laser, the chaotic light from an LED, the fluorescent emission from a dye widely used as a contrast agent and also the downconverted output from the process of Spontaneous Parametric Down Conversion which has widespread applications in Quantum Optics as a source of entangled photon pairs. Additionally, we studied the variation of the Stokes parameters as well as von Neumann entropy with pixel binning in the array detector output.