期刊
SCIENCE ADVANCES
卷 6, 期 4, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.aay0837
关键词
-
资金
- Key R&D Program of Guangdong Province [2018B030325002]
- National Natural Science Foundation of China (NSFC) [61761130082, 11574001, 11774116]
- Royal Society-Newton Advanced Fellowship
- National Program for Support of Top-notch Young Professionals
- Natural Science Foundation of Hubei Province of China [2018CFA048]
- Program for HUST Academic Frontier Youth Team [2016QYTD05]
- Fundamental Research Funds for the Central Universities [2019kfyRCPY037]
- Claude Leon Foundation
- Department of Science and Technology (South Africa)
The global quantum network requires the distribution of entangled states over long distances, with substantial advances already demonstrated using polarization. While Hilbert spaces with higher dimensionality, e.g., spatial modes of light, allow higher information capacity per photon, such spatial mode entanglement transport requires custom multimode fiber and is limited by decoherence-induced mode coupling. Here, we circumvent this by transporting multidimensional entangled states down conventional single-mode fiber (SMF). By entangling the spin-orbit degrees of freedom of a biphoton pair, passing the polarization (spin) photon down the SMF while accessing multiple orbital angular momentum (orbital) subspaces with the other, we realize multidimensional entanglement transport. We show high-fidelity hybrid entanglement preservation down 250 m SMF across multiple 2 x 2 dimensions, confirmed by quantum state tomography, Bell violation measures, and a quantum eraser scheme. This work offers an alternative approach to spatial mode entanglement transport that facilitates deployment in legacy networks across conventional fiber.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据