多模式量子纠缠及纠缠网络研究进展
摘要
51 18 /2024 9 / researchers have shifted their focus to other multimode methods to prepare large -scale entangled states.The main preparation schemes are based on spatial, temporal, and frequency degree of freedom of light.Among the schemes based on various spatial modes, typical approaches include combinations of the spatial pixels, orbital angular momentum multiplexing, and cascading non -linear processes, with their quantum correlation characteristics primarily manifested in the spatial dimension.As to temporal modes, the time -domain multiplexing scheme is predominantly used to generate large scale entanglement with the correlation of time series.For frequency modes, optical frequency comb technology is primarily utilized to prepare multimode entanglement associated with the frequency domain. Conclusions and ProspectsWith the significant development of the field of quantum information and the ongoing progress in experimental technology, the quantum network composed of multimode entangled states has emerged as a crucial quantum resource in the fields of quantum precision measurement and quantum information processing.Such entanglement -based quantum network has demonstrated quantum superiority in numerous experiments and applications, underscoring its growing significance.Therefore, it is imperative to further advance the construction and application of versatile quantum networks.