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A programmable topological photonic chip.

Tianxiang Dai¹, Anqi Ma², Jun Mao²

¹State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, China. tianxiang.dai@pku.edu.cn.

Nature Materials

|May 22, 2024

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Summary

This summary is machine-generated.

Researchers developed a programmable topological photonic chip using silicon photonics. This chip allows dynamic control over topological phases of light, enabling new possibilities for robust photonic devices and topological technologies.

Area of Science:

Photonics
Topological Physics
Materials Science

Background:

Controlling topological phases of light is crucial for developing robust photonic devices.
Advanced programmability is needed for sophisticated control in topological photonic devices.
Existing platforms often lack the flexibility for dynamic phase transition studies.

Purpose of the Study:

To demonstrate a fully programmable topological photonic chip.
To enable arbitrary control over photonic artificial atoms and their interactions.
To investigate dynamic topological phase transitions and topological insulators.

Main Methods:

Integration of silicon photonic nanocircuits and microresonators.
Individual addressing and control of photonic artificial atoms.

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Reprogrammable chip architecture for adjustable parameters and configurations.

Main Results:

Demonstration of a large-scale, programmable topological photonic chip.
Observation of dynamic topological phase transitions and diverse photonic topological insulators.
Characterization of topological robustness against disorders and topological Anderson phase transitions.

Conclusions:

The developed chip offers a flexible and versatile platform for fundamental science and topological technologies.
Individual programming enables comprehensive statistical characterization of topological properties.
Rapid reprogramming allows for multifunctionality, advancing the field of topological photonics.