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Related Experiment Video

Updated: Jul 17, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Self-aligned heterogeneous quantum photonic integration.

Kinfung Ngan1, Yeeun Choi2,3, Chun-Chieh Chang4

  • 1JILA and Department of Physics, University of Colorado Boulder, Colorado, USA.

Light, Science & Applications
|July 15, 2026
PubMed
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We developed a self-aligned integration method for quantum photonics, achieving near-unity coupling efficiency. This breakthrough overcomes material mismatches, enabling scalable quantum information processing and networks.

Area of Science:

  • Quantum photonics and integrated quantum technologies.

Background:

  • Scalable quantum information processing requires integrating high-quality quantum emitters with mature photonic technologies.
  • Current heterogeneous integration methods suffer from significant insertion losses at material interfaces.

Purpose of the Study:

  • To present a self-aligned heterogeneous quantum photonic integration approach enabling near-unity coupling efficiency.
  • To demonstrate the integration of solid-state quantum emitters with photonic circuits for enhanced performance.

Main Methods:

  • A self-aligned heterogeneous integration technique was employed.
  • Demonstrated Purcell enhancement of silicon vacancy (SiV) centers in diamond using a titanium dioxide (TiO₂) photonic crystal cavity.
  • Utilized TiO₂ photonic circuits for optical spin control and readout.

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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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Related Experiment Videos

Last Updated: Jul 17, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

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

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

  • Combined inverse photonic design with heterogeneous integration for efficient single-photon collection.

    • Main Results:

    • Achieved near-unity coupling efficiency at the material interface.
    • Demonstrated Purcell enhancement of SiV centers, indicating improved light-matter interaction.
    • Showcased optical spin control and readout capabilities.
    • Enabled efficient and broadband single-photon collection into heterogeneous waveguides.

    Conclusions:

    • The developed self-aligned approach overcomes critical interface loss challenges in quantum photonic integration.
    • This method facilitates the combination of diverse solid-state quantum emitters with advanced thin-film photonic devices.
    • Establishes a practical pathway for scalable quantum photonic integrated circuits compatible with mature platforms.