期刊
SCIENCE ADVANCES
卷 8, 期 2, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.abk3075
关键词
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资金
- Villum Fonden [00022988, 37372, 35950]
- National Key Research and Development Program of China [2019YFB2203400]
- 111 Project [B20030]
- UESTC Shared Research Facilities of Electromagnetic Wave and Matter Interaction [Y0301901290100201]
- China Scholarship Council [2020023TO014]
- Fundamental Research Fund for Central Universities [NS2021064]
- National Natural Science Foundation of China [62105150]
- Natural Science Foundation of Jiangsu Province [BK20210289]
We demonstrate a room-temperature on-chip integrated OAM source that emits well-collimated single photons carrying entangled spin and OAM states. Our research bridges the gap between conventional OAM manipulation and nonclassical light sources, enabling high-dimensional and large-scale photonic quantum systems for quantum information processing.
On-chip photon sources carrying orbital angular momentum (OAM) are in demand for high-capacity optical information processing in both classical and quantum regimes. However, currently exploited integrated OAM sources have been primarily limited to the classical regime. Here, we demonstrate a room-temperature on-chip integrated OAM source that emits well-collimated single photons, with a single-photon purity of g((2))(0) approximate to 0.22, carrying entangled spin and OAM states and forming two spatially separated entangled radiation channels with different polarization properties. The OAM-encoded single photons are generated by efficiently outcoupling diverging surface plasmon polaritons excited with a deterministically positioned quantum emitter via Archimedean spiral gratings. Our OAM single-photon source platform bridges the gap between conventional OAM manipulation and nonclassical light sources, enabling high-dimensional and large-scale photonic quantum systems for quantum information processing.
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