Fiber-coupled superconducting nanowire single-photon detectors integrated with a bandpass filter on the fiber end-face
作者: W J ZhangX Y YangH LiL X YouC L LvL ZhangC J ZhangX Y LiuZ WangX M Xie
作者单位: 1State Key Lab of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology (SIMIT), Chinese Academy of Sciences (CAS), 865 Changning Rd., Shanghai, 200050, People’s Republic of China
2CAS Center for Excellence in Superconducting Electronics (CENSE), 865 Changning Rd., Shanghai, 200050, People’s Republic of China
刊名: Superconductor Science and Technology, 2018, Vol.31 (3)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1361-6668/aaa6b4
原始语种摘要: Superconducting nanowire single-photon detectors (SNSPDs) with both high system detection efficiency (SDE) and low dark count rate (DCR) play significant roles in quantum information processes and various applications. The background dark counts of SNSPDs originate from the room temperature blackbody radiation coupled to the device via a fiber. Therefore, a bandpass filter (BPF) operated at low temperature with minimal insert loss is necessary to suppress the background DCR. Herein, a low-loss BPF integrated on a single-mode fiber end-face was designed, fabricated and verified for the low temperature implement. The fiber end-face BPF was featured with a typical passband width about 40 nm in the 1550 nm telecom band and a peak transmittance of over 0.98. SNSPD with high SDE fabricated on a...
全文获取路径: IOP  (合作)

  • bandpass 带通
  • coupled 耦合
  • photon 光量子
  • integrated 综[组,复]合
  • passband 通带
  • single 单独的
  • filter 过滤机
  • fabricated 制造
  • device 装置
  • temperature 温度