Comparison of Superconducting Nanowire Single-Photon Detectors Made of NbTiN and NbN Thin Films

@article{Yang2018ComparisonOS,
  title={Comparison of Superconducting Nanowire Single-Photon Detectors Made of NbTiN and NbN Thin Films},
  author={Xiaoyan Yang and Lixing You and Lu Zhang and Chaolin Lv and Hao Li and Xiaoyu Liu and Hui Zhou and Zhen Wang},
  journal={IEEE Transactions on Applied Superconductivity},
  year={2018},
  volume={28},
  pages={1-6}
}
We fabricated superconducting nanowire single-photon detectors (SNSPDs) made of NbTiN and NbN thin films in the same fabrication batch. Various parameters, such as critical temperature, resistivity, switching current, and kinetic inductance, were compared between the two types of SNSPDs. These data indicate that NbTiN SNSPD surpasses NbN SNSPD in many aspects, including a shorter recovery time due to smaller kinetic inductance, a lower timing jitter due to higher switching current, and better… CONTINUE READING

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