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Updated: May 22, 2025
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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
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Atomic-Scale On-Demand Photon Polarization Manipulation with High Efficiency for Integrated Photonic Chips.
Yunning Lu1,2, Zeyang Liao1, Xue-Hua Wang1
1Sun Yat-sen University, State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, Guangzhou 510275, China.
Physical Review Letters
|March 14, 2025
Summary
We developed a method to control single photon polarization using quantum emitters in photonic waveguides. This breakthrough enables advanced polarization encoding for integrated quantum photonic circuits.
Area of Science:
- Quantum Photonics
- Integrated Optics
- Quantum Information Science
Background:
- Integrated quantum photonic circuits lack robust polarization encoding capabilities.
- Controlling photon polarization is crucial for quantum information processing and quantum communication.
Purpose of the Study:
- To propose and demonstrate a scheme for arbitrary polarization manipulation of single photons.
- To enable polarization encoding in integrated quantum photonic circuits.
Main Methods:
- Integrating a single quantum emitter within a photonic waveguide.
- Utilizing a three-level emitter with controlled transition paths and external coherent field driving.
- Achieving adjustable coupling strengths between the emitter and orthogonal polarization degenerate modes.
Main Results:
- Demonstrated arbitrary polarization conversion for any input polarization.
- Achieved tunable working frequency and high conversion efficiency.
- Exhibited excellent anti-dissipation capabilities at an atomic scale.
Conclusions:
- The proposed scheme offers an effective solution for polarization encoding in integrated quantum photonic circuits.
- This advancement is expected to significantly boost the development of quantum photonic chips.
