Pankratov Andrey L, Gordeeva Anna V, Revin Leonid S, Ladeynov Dmitry A, Yablokov Anton A, Kuzmin Leonid S
Nizhny Novgorod State Technical University n.a. R.E. Alekseev, GSP-41, Nizhny Novgorod, 603950, Russia.
Institute for Physics of Microstructures of RAS, GSP-105, Nizhny Novgorod, 603950, Russia.
Beilstein J Nanotechnol. 2022 Jul 4;13:582-589. doi: 10.3762/bjnano.13.50. eCollection 2022.
Here, we experimentally test the applicability of an aluminium Josephson junction of a few micrometers size as a single photon counter in the microwave frequency range. We have measured the switching from the superconducting to the resistive state through the absorption of 10 GHz photons. The dependence of the switching probability on the signal power suggests that the switching is initiated by the simultaneous absorption of three and more photons, with a dark count time above 0.01 s.
在此，我们通过实验测试了几微米大小的铝约瑟夫森结在微波频率范围内作为单光子计数器的适用性。我们测量了通过吸收10GHz光子从超导态到电阻态的转变。开关概率对信号功率的依赖性表明，这种转变是由三个及以上光子的同时吸收引发的，暗计数时间超过0.01秒。
