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Related Experiment Video

Updated: May 1, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Ultracompact and multifunctional integrated photonic platform.

Zhuochen Du¹, Kun Liao¹, Tianxiang Dai¹

¹State Key Laboratory for Mesoscopic Physics & Department of Physics, Collaborative Innovation Center of Quantum Matter, Beijing Academy of Quantum Information Sciences, Nano-optoelectronics Frontier Center of Ministry of Education, Peking University, Beijing 100871, China.

Science Advances

|June 19, 2024

Summary

Researchers developed an ultracompact multifunctional integrated photonic platform using inverse design. This compact platform enables advanced optical information processing and demonstrates high fidelity in complex models and a handwritten digit classification task.

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Area of Science:

Photonics and Optical Engineering
Integrated Optics
Computational Physics

Background:

Multifunctional integrated photonic platforms are crucial for optical information processing.
Current platforms often require large footprints due to integration challenges.
Achieving miniaturization is key for advancing photonic technologies.

Purpose of the Study:

To realize a multifunctional integrated photonic platform with an ultracompact footprint.
To demonstrate the platform's capability for complex computational tasks.
To provide an effective method for ultrasmall integrated photonic platform realization.

Main Methods:

Utilized inverse design to create a compact photonic platform.
Integrated 86 inverse-designed couplers and 91 phase shifters.
Implemented one-dimensional Floquet Su-Schrieffer-Heifer and Aubry-André-Harper models.

Main Results:

Achieved an ultracompact photonic platform (3 mm by 0.2 mm), significantly smaller than previous designs.
Demonstrated high fidelities for the Su-Schrieffer-Heeger (97.90%) and Aubry-André-Harper (99.34%) models.
Successfully performed a handwritten digits classification task with 87% accuracy using on-chip training.

Conclusions:

The inverse design approach enables the creation of ultrasmall, multifunctional integrated photonic platforms.
The developed platform is scalable and capable of performing complex computing tasks.
This work offers a significant advancement in miniaturizing photonic integrated circuits.