Chi Cheng, Dang Zhibo, Liu Yongqi, Wang Yuwei, Cheng Dewen, Fang Zheyu, Wang Yongtian
Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing, China.
School of Physics, State Key Lab for Mesoscopic Physics, Academy for Advanced Interdisciplinary Studies, Collaborative Innovation Center of Quantum Matter, and Nano-optoelectronics Frontier Center of Ministry of Education, Peking University, Beijing, China.
Light Sci Appl. 2025 Mar 5;14(1):111. doi: 10.1038/s41377-024-01712-x.
The development of color routers (CRs) realizes the splitting of dichromatic components, contributing to the modulation of photon momentum that acts as the information carrier for optical information technology on the frequency and spatial domains. However, CRs with optical stimulation lack active control of photon momentum at deep subwavelength scale because of the optical diffraction limit. Here, we experimentally demonstrate an active manipulation of dichromatic photon momentum at a deep subwavelength scale via electron-induced CRs, where the CRs radiation patterns are manipulated by steering the electron impact position within 60 nm in a single nanoantenna unit. Moreover, an encrypted display device based on programmable modulation of the CR array is designed and implemented. This approach with enhanced security, large information capacity, and high-level integration at a deep subwavelength scale may find applications in photonic devices and emerging areas in quantum information technologies.
彩色路由器（CRs）的发展实现了双色分量的分离，有助于在频率和空间域上对作为光信息技术信息载体的光子动量进行调制。然而，由于光学衍射极限，具有光刺激的CRs在深亚波长尺度上缺乏对光子动量的主动控制。在此，我们通过电子诱导的CRs在实验上证明了在深亚波长尺度上对双色光子动量的主动操纵，其中通过在单个纳米天线单元内将电子撞击位置控制在60纳米范围内来操纵CRs辐射图案。此外，还设计并实现了一种基于CR阵列可编程调制的加密显示设备。这种在深亚波长尺度上具有增强安全性、大信息容量和高度集成性的方法可能会在光子器件和量子信息技术的新兴领域中找到应用。
