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Updated: Jul 6, 2025
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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
Published on: April 4, 2017
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Quantum interference of pulsed time-bin entanglement generated from silicon ring resonator.
Takafumi Ono1,2, Yoshiaki Tsujimoto3, Kentaro Wakui3
1Program in Advanced Materials Science Faculty of Engineering and Design, Kagawa University, 2217-20 Hayashi-cho, Takamatsu, Kagawa, 761-0396, Japan. ono.takafumi@kagawa-u.ac.jp.
Scientific Reports
|January 10, 2024
Summary
We achieved pulsed operation of entangled photon pairs using a silicon ring resonator. This breakthrough is key for developing synchronized quantum networks based on silicon photonics.
Area of Science:
- Quantum optics
- Silicon photonics
- Integrated photonics
Background:
- Entangled photon pairs are crucial for quantum communication and computation.
- Silicon photonics offers a scalable platform for integrated quantum devices.
Purpose of the Study:
- To demonstrate pulsed operation of an entangled photon pair source using a silicon ring resonator.
- To analyze the entanglement properties and interference visibility.
Main Methods:
- Generation of time-bin entangled photon pairs via spontaneous four-wave mixing in a silicon ring resonator.
- Excitation using a pulsed pump laser.
- Entanglement analysis using asymmetric Mach-Zehnder interferometers and single-photon detectors.
Main Results:
- Successful pulsed generation of entangled photon pairs at telecommunication wavelengths.
- Observation of non-classical interference with visibility exceeding the classical limit.
- Discussion of interference visibility degradation using a theoretical model.
Conclusions:
- The pulsed operation of the silicon ring resonator source is a significant advancement.
- This work paves the way for synchronized quantum networks leveraging silicon photonics.
