Nanjing University Researchers Develop Hybrid-Phase Strategy Combining AA and PB Phases for Achromatic Meta-Optics

Researchers at Nanjing University have developed a new method in the field of photonics and metasurface technology, addressing a significant challenge in wavefront control. Led by Professors Yijun Feng and Ke Chen, the team introduced a hybrid-phase cooperative dispersion-engineering strategy that combines Aharonov–Anandan (AA) and Pancharatnam–Berry (PB) phases. This approach aims to enhance achromatic meta-optics by enabling dual-spin unlocking through advanced phase dispersion techniques.

The research focuses on overcoming limitations in traditional wavefront manipulation methods by leveraging the unique properties of AA and PB phases. By integrating these two mechanisms, the team engineered a system capable of precise control over light waves across different wavelengths without chromatic aberration. The findings represent a step forward in achieving more efficient and versatile optical devices for applications in imaging, sensing, and communication technologies.

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Date: February 4, 2026

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