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Updated: May 15, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Longitudinal polarization periodicity of unpolarized light passing through a double wedge depolarizer
Juan Carlos G de Sande1, Massimo Santarsiero, Gemma Piquero
1Departamento de Circuitos y Sistemas, Universidad Politécnica de Madrid, 28031 Madrid, Spain.
Abstract:
The polarization characteristics of unpolarized light passing through a double wedge depolarizer are studied. It is found that the degree of polarization of the radiation propagating after the depolarizer is uniform across transverse planes after the depolarizer, but it changes from one plane to another in a periodic way giving, at different distances, unpolarized, partially polarized, or even perfectly polarized light. An experiment is performed to confirm this result. Measured values of the Stokes parameters and of the degree of polarization are in complete agreement with the theoretical predictions.
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