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Updated: Jun 12, 2026

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

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

Published on: September 5, 2019

Programmable electron-induced color router array.

Cheng Chi¹, Zhibo Dang², Yongqi Liu¹

¹Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing, China.

Light, Science & Applications

|March 5, 2025

Summary

This summary is machine-generated.

Researchers achieved active control of photon momentum at the nanoscale using electron-induced color routers (CRs). This breakthrough enables manipulation of light properties for advanced optical information technologies and quantum applications.

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Area of Science:

Optics and Photonics
Quantum Information Technologies
Nanotechnology

Background:

Color routers (CRs) enable splitting of dichromatic components for optical information technology.
Current CRs lack active control of photon momentum at the deep subwavelength scale due to optical diffraction limits.

Purpose of the Study:

To demonstrate active manipulation of dichromatic photon momentum at a deep subwavelength scale.
To develop an encrypted display device utilizing programmable modulation of CR arrays.

Main Methods:

Experimentally demonstrated electron-induced CRs for manipulating photon momentum.
Steered electron impact position within 60 nm in a single nanoantenna unit to control CR radiation patterns.

Main Results:

Achieved active manipulation of dichromatic photon momentum at deep subwavelength scales.
Successfully designed and implemented an encrypted display device based on programmable CR arrays.

Conclusions:

Electron-induced CRs offer active control of photon momentum at deep subwavelength scales, overcoming diffraction limits.
The developed approach provides enhanced security, large information capacity, and high integration for photonic devices and quantum information technologies.