Quantum Hybrid Plasmonic Nanocircuits for Versatile Polarized Photon Generation

被引:6
作者
Wu, Cuo [1 ,2 ]
Kumar, Shailesh [2 ]
Komisar, Danylo [2 ]
Meng, Chao [2 ]
Deng, Yadong [2 ]
Wang, Zhiming [1 ]
Bozhevolnyi, Sergey, I [2 ]
Ding, Fei [2 ]
机构
[1] Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Peoples R China
[2] Univ Southern Denmark, Ctr Nano Opt, DK-5230 Odense M, Denmark
基金
欧盟地平线“2020”;
关键词
polarization out-couplers; quantum emitters; quantum hybrid plasmonic nanocircuits; versatile polarized photon generation; SPIN; ENTANGLEMENT;
D O I
10.1002/adom.202101596
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Hybrid plasmonic nanocircuits developed insofar enable efficient coupling and routing of single photons generated by embedded quantum emitters (QEs), providing at the same time little or no control over the polarization of out-coupled single photons. Here, with numerical simulations a QE-driven hybrid plasmonic nanocircuit for versatile polarized photon generation by using ultracompact polarization out-couplers in multi-branched dielectric-loaded plasmonic waveguides is proposed and demonstrated. Upon excitation of a QE, which is embedded at the center of a star-shaped six-branched hybrid plasmonic waveguide and characterized with a normal to the surface radiative transition dipole, plasmonic waveguide modes are efficiently (approximate to 85%) excited and routed by the six-branched waveguide toward propitiously designed out-couplers. By exploiting two types of subwavelength polarization out-couplers producing linearly and circularly polarized free-space radiation, spatially separated single-photon generation channels characterized by four different linear and two circular polarizations are created. The demonstrated hybrid plasmonic nanocircuit addresses specifically the scenario where different quantum chips communicate via polarization-compatible channels, thereby opening new design possibilities for energy-efficient and ultracompact quantum photonic nanocircuits in nanophotonic quantum technologies.
引用
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页数:11
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