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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Nonquantum entanglement resolves a basic issue in polarization optics.

B N Simon1, S Simon, F Gori

  • 1Department of Applied Mechanics, IIT Madras, Chennai 600 036, India.

Physical Review Letters
|April 7, 2010
PubMed
Summary
This summary is machine-generated.

This study resolves a long-standing question in polarization optics by defining physical Mueller matrices. It uses nonquantum entanglement to establish criteria for these essential matrices in optical systems.

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Area of Science:

  • Optics and Photonics
  • Mathematical Physics

Background:

  • The physical interpretation of 4x4 real matrices as Mueller matrices in polarization optics is a classical, unresolved issue.
  • Distinguishing physical Mueller matrices from non-physical ones is crucial for accurate polarization analysis.

Purpose of the Study:

  • To definitively resolve the classical issue of which 4x4 real matrices represent physical Mueller matrices.
  • To establish a physical basis for selecting valid Mueller matrices in polarization optics.

Main Methods:

  • The study employs the concept of nonquantum entanglement (inseparability) between polarization and spatial degrees of freedom.
  • Analysis is performed on electromagnetic beams with non-homogeneous polarization states.

Main Results:

  • Nonquantum entanglement provides a rigorous physical criterion for identifying physical Mueller matrices.
  • This framework definitively resolves the ambiguity in selecting valid Mueller matrices for optical systems.

Conclusions:

  • The physical basis for Mueller matrices is rooted in the inseparability of polarization and spatial properties.
  • This work provides a definitive solution to a fundamental problem in polarization optics.