Multichip multidimensional quantum networks with entanglement retrievability

• 成果类型: Article
• 署名作者: Zheng, Yun; Zhai, Chonghao; Liu, Dajian; Mao, Jun; Chen, Xiaojiong; Dai, Tianxiang; Huang, Jieshan; Bao, Jueming; Fu, Zhaorong; Tong, Yeyu; Zhou, Xuetong; Yang, Yan; Tang, Bo; Li, Zhihua; Li, Yan; Gong, Qihuang; Tsang, Hon Ki; Dai, Daoxin; Wang, Jianwei
• 署名单位: Peking University; Zhejiang University; Zhejiang University; Hong Kong University of Science & Technology (Guangzhou); Chinese University of Hong Kong; Chinese Academy of Sciences; Institute of Microelectronics, CAS; Peking University; Peking University; Tsinghua University; Collaborative Innovation Center of Quantum Matter; Peking University; Hefei National Laboratory
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-12304
• DOI: 10.1126/science.adg9210
• 发表日期: 2023-07-14
• 页码: 221-226
• 关键词: channels; light

摘要

Quantum networks provide the framework for quantum communication, clock synchronization, distributed quantum computing, and sensing. Implementing large-scale and practical quantum networks relies on the development of scalable architecture and integrated hardware that can coherently interconnect many remote quantum nodes by sharing multidimensional entanglement through complex-medium quantum channels. We demonstrate a multichip multidimensional quantum entanglement network based on mass-manufacturable integrated-nanophotonic quantum node chips fabricated on a silicon wafer by means of complementary metal-oxide-semiconductor processes. Using hybrid multiplexing, we show that multiple multidimensional entangled states can be distributed across multiple chips connected by few-mode fibers. We developed a technique that can efficiently retrieve multidimensional entanglement in complex-medium quantum channels, which is important for practical uses. Our work demonstrates the enabling capabilities of realizing large-scale practical chip-based quantum entanglement networks.