Metalens-array–based high-dimensional and multiphoton quantum source

doi:10.1126/science.aba9779

GSTDTAP > 气候变化

DOI	10.1126/science.aba9779
	Metalens-array–based high-dimensional and multiphoton quantum source
	Lin Li; Zexuan Liu; Xifeng Ren; Shuming Wang; Vin-Cent Su; Mu-Ku Chen; Cheng Hung Chu; Hsin Yu Kuo; Biheng Liu; Wenbo Zang; Guangcan Guo; Lijian Zhang; Zhenlin Wang; Shining Zhu; Din Ping Tsai
	2020-06-26
发表期刊	Science
出版年	2020
英文摘要	Spontaneous down-conversion is an exotic optical process in a nonlinear crystal in which a high-energy photon splits into two lower-energy photons that are quantum mechanically entangled. These entangled pairs are valuable commodities for quantum information processing and quantum communications. Because the experimental setup is usually performed with bulk optical components, there is a need to decrease the size scale for application. Li et al. combined an array of specialized metalenses with a nonlinear crystal and show that the scale of the process can be shrunk substantially. The approach should prove useful for developing miniaturized integrated quantum optical technologies. Science , this issue p. [1487][1] 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. [1]: /lookup/doi/10.1126/science.aba9779
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/278218
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Lin Li,Zexuan Liu,Xifeng Ren,等. Metalens-array–based high-dimensional and multiphoton quantum source[J]. Science,2020.
APA	Lin Li.,Zexuan Liu.,Xifeng Ren.,Shuming Wang.,Vin-Cent Su.,...&Din Ping Tsai.(2020).Metalens-array–based high-dimensional and multiphoton quantum source.Science.
MLA	Lin Li,et al."Metalens-array–based high-dimensional and multiphoton quantum source".Science (2020).