文献类型：期刊文献

英文题名：High-fidelity nonreciprocal transmission of OAM superstates

作者：Zhang, Jiedong[1];Zhang, Shicheng[1];Gong, Shangqing[1,2];Niu, Yueping[1]

机构：[1]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China;[2]Hefei Natl Lab, Hefei 230088, Peoples R China

年份：2026

卷号：13

期号：7

起止页码：1317

外文期刊名：OPTICA

收录：;EI(收录号：20263021162273);Scopus(收录号：2-s2.0-105045394250);WOS:【SCI-EXPANDED(收录号:WOS:001829524600014)】；

基金：Funding. National Natural Science Foundation of China (12034007, 12004112, 12374327) ; Shanghai Municipal Education Commission (2023ZKZD39) ; Quantum Science and Technology-National Science and Technology

语种：英文

外文关键词：Light transmission - Optical communication - Quantum optics - Signal processing - Thermal effects

摘要：Harnessing light that carries orbital angular momentum (OAM) could dramatically boost the capacity of optical communication and high-dimensional signal processing. A particularly desirable but difficult goal is nonreciprocal transmission-allowing such twisted light beams to travel efficiently in one direction while blocking them in the reverse direction. This challenge is especially acute in hot atomic systems, where random thermal motion blurs the delicate intensity patterns of OAM superstates. Here, we show that incoherent optical pumping can effectively suppress these thermal effects, thereby enabling robust nonreciprocal transmission of OAM superstates. We achieve a forward transmission of 85%, a backward isolation of 22.7 dB, and a measurement accuracy exceeding 99.9% for distinguishing OAM superstates separated by only 0.01 in topological charge. We further verify the overall performance of the nonreciprocal system by transmitting a grayscale image, obtaining a bit error rate below 0.07%. Our results establish a flexible and scalable platform for nonreciprocal high-dimensional OAM photonics, offering promising routes toward advanced optical communications and quantum information processing. (c) 2026 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement