| Literature DB >> 32587020 |
Lin Li1,2,3,4, Zexuan Liu1,5,6, Xifeng Ren7,8, Shuming Wang9,5,6, Vin-Cent Su10, Mu-Ku Chen2,3,11, Cheng Hung Chu3,11, Hsin Yu Kuo3,11, Biheng Liu7,8, Wenbo Zang1,6, Guangcan Guo7,8, Lijian Zhang9,5,6, Zhenlin Wang9,6, Shining Zhu9,5,6, Din Ping Tsai12,3,11.
Abstract
The development of two-dimensional metasurfaces has shown great potential in quantum-optical technologies because of the excellent flexibility in light-field manipulation. By integrating a metalens array with a nonlinear crystal, we demonstrate a 100-path spontaneous parametric down-conversion photon-pair source in a 10 × 10 array, which shows promise for high-dimensional entanglement and multiphoton-state generation. We demonstrate two-, three- and four-dimensional two-photon path entanglement with different phases encoded by metalenses with fidelities of 98.4, 96.6, and 95.0%, respectively. Furthermore, four-photon and six-photon generation is observed with high indistinguishability of photons generated from different metalenses. Our metalens-array-based quantum photon source is compact, stable, and controllable, indicating a new platform for integrated quantum devices.Year: 2020 PMID： 32587020 DOI： 10.1126/science.aba9779
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728