Design of a Fano-resonance-enhanced dielectric grating for ultralow-filling-factor superconducting nanowire single-photon detector
Fan Zheng, Kejing Wei, Xiuli Huang, Junxia Zhao, Nan Chen, Jing Qiang, Lili Cheng, Ang Li · 2026
Read Design of a Fano-resonance-enhanced dielectric grating for ultralow-filling-factor superconducting nanowire single-photon detector by Fan Zheng, Kejing Wei, Xiuli Huang, Junxia Zhao, Nan Chen, Jing Qiang, Lili Cheng, Ang Li (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/PMC13558626.txt.
Description
Fan Zheng and seven colleagues designed in 2026 a light-trapping grating that could let single-photon detectors run faster without losing sensitivity. Superconducting nanowire detectors excel in the near infrared, yet sparse wires absorb poorly while dense wires recover slowly after each detection. Their answer is a silicon dielectric grating that excites a Fano resonance, a sharp optical interference effect, above wires covering only a tenth of the surface.
Simulations at the telecom wavelength of 1550 nanometres, run with a standard time-domain solver, showed absorption above ninety-eight percent under ideal conditions despite the ultralow wire coverage. Sparse wires carry less kinetic inductance, which is what slows detector reset, so the design promises speed and efficiency together. The authors offer the scheme as a blueprint for next-generation photon counting in communications and imaging.
Catalog record
| CREATOR | Fan Zheng, Kejing Wei, Xiuli Huang, Junxia Zhao, Nan Chen, Jing Qiang, Lili Cheng, Ang Li |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 21494 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |