华中科技大学陈林小组在最新研究中，报道了极化控制的手性输运。2025年2月10日出版的《光：科学与应用》杂志发表了这项成果。

研究人员表示，手性选择性输运是一种有趣的现象，不仅在基础研究中具有重要意义，而且在光通信和传感等领域也具有应用前景。目前，片上手性输运器件是静态的，无法根据输入模式调制输出模式。这限制了设备功能重构和信息传输能力。

研究人员提出以入射极化分集为主题来控制哈密顿演化路径，实现极化依赖的手性输运。通过将TE和TM极化的演化路径映射到精心设计的双耦合波导上，该团队实验证明了不同的极化产生可控的模态输出。

这项工作将多输入、多输出和极化多样性概念与手性输运相结合，挑战了目前普遍认为的手性输运中模态输出固定于特定模式的观念，从而为片上可重构和高容量手性选择器件的发展开辟了道路。

附：英文原文

Title: Polarization-controlled chiral transport

Author: Zhu, Hang, Wang, Jian, Al, Andrea, Chen, Lin

Issue&Volume: 2025-02-10

Abstract: Handedness-selective chiral transport is an intriguing phenomenon that not only holds significant importance for fundamental research but also carries application prospects in fields such as optical communications and sensing. Currently, on-chip chiral transport devices are static, unable to modulate the output modes based on the input modes. This limits both device functionality reconfiguration and information transmission capacity. Here, we propose to use the incident polarization diversity to control the Hamiltonian evolution path, achieving polarization-dependent chiral transport. By mapping the evolution path of TE and TM polarizations onto elaborately engineered double-coupled waveguides, we experimentally demonstrate that different polarizations yield controllable modal outputs. This work combines Multiple-Input, Multiple-Output, and polarization diversity concepts with chiral transport and challenges the prevailing notion that the modal outputs are fixed to specific modes in chiral transport, thereby opening pathways for the development of on-chip reconfigurable and high-capacity handedness-selective devices.

DOI: 10.1038/s41377-025-01762-9

Source: https://www.nature.com/articles/s41377-025-01762-9

来源：科学网  小柯机器人