, Volume 14, Issue 1, pp 117–123 | Cite as

Amplification of Absorption Induced by Localized Surface Plasmons in Superconducting Nanowire Single-Photon Detector

  • Qinyu Xue
  • Gang SongEmail author
  • Rongzhen Jiao


The absorption can be amplified by using tungsten silicide (WSi) and metallic nano-antennas, which is related with the detection efficiency of a superconducting nanowire single-photon detector based on surface plasmons. A metal slot sandwiched between two hydrogen silsequioxane (HSQ), WSi nanowire, and metallic fan nano-antennas are the elements of the proposed single-photon detector. The slot is also filled with HSQ and WSi nanowire is inserted in the top of the slot. Metallic fan nano-antennas are added no WSi nanowire and the all these elements are deposed on the sapphire substrate. Our results show that the absorption/the detection efficiency of our proposed structure is much larger than the one with the niobium nitride (NbN) nanowire. There is an optimal width of WSi nanowire and the distance between WSi nanowire and metallic nano-antennas for the absorption/the detection efficiency of the detector. Our structure provides suitable parameters for designing SNSPD in experiments.


SNSPD WSi NbN Absorption 



Gang Song and Rongzhen Jiao have the same contributions to this work and the readers can also correspond with Rongzhen Jiao National Natural Science Foundationof China (No. 61571060); Fund of State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications); PR China and Ministry of Science and Technology of China 2016YFA0301300


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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Beijing University of Posts and TelecommunicationsHaidian DistrictChina

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