Ultrafast reset time of superconducting single photon detectors

作者：Tarkhov M^*; Claudon J; Poizat J Ph; Korneev A; Divochiy A; Minaeva O; Seleznev V; Kaurova N; Voronov B; Semenov A V; Gol'tsman G

来源：Applied Physics Letters, 2008, 92(24): 241112.

DOI：10.1063/1.2945277

We have measured the ultrafast reset time of NbN superconducting single photon detectors (SSPDs) based on a design consisting of N parallel superconducting stripes. Compared to a standard SSPD of identical active area, the parallel SSPD displays a similar detection efficiency and a kinetic inductance, which is divided by N(2). For N=12, the duration of the voltage detection pulse is reduced by nearly two orders of magnitude down to 200 ps. The timing jitter associated with the rising front is only 16 ps. These results open a way to efficient detectors with ultrahigh counting rate exceeding 1 GHz.

• 出版日期2008-6-16
• 单位中国地震局