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Updated: Jun 16, 2026

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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Summary
This study introduces a novel three-mirror system that precisely rotates light polarization by 360 degrees. The system maintains beam alignment and introduces minimal elliptical polarization in the infrared spectrum.
Area of Science:
- Optics and Photonics
- Polarization Optics
Background:
- Polarization control is crucial in various optical applications.
- Existing polarization rotators may have limitations in range or beam alignment.
Purpose of the Study:
- To describe a novel three-mirror system for arbitrary polarization angle rotation.
- To analyze the system's performance regarding beam coaxiality and induced polarization states.
Main Methods:
- Design and theoretical analysis of a three-mirror optical system.
- Calculation of metallic reflective phase shifts across the visible and infrared spectrum.
Main Results:
- The system achieves continuous polarization rotation from 0 to 360 degrees.
- The output beam remains coaxial with the input beam.
- Negligible elliptical polarization is introduced for wavelengths > 5 micrometers.
Conclusions:
- The described three-mirror system offers a versatile and precise method for polarization control.
- It is particularly suitable for applications requiring high-fidelity polarization manipulation in the mid-infrared range.
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