Simulation and measurement of millimeter-wave radiation from Josephson junction array

Zhang Xin¹, Zhao Sheng-Hui¹, Wang Li-Tian¹, Xing Jian¹, Zhang Sheng-Fang¹, Liang Xue-Lian¹, He Ze¹, Wang Pei², Zhao Xin-Jie^{1, 3}, He Ming^{1, 4}, Ji Lu^{1, 3, †}

(a) The RCSJ circuit model of the IVCs simulation. Here, I_DC is the bias current, R_n is the total normal resistance, C is the total junction capacitance, and V_out is the voltage across the junction. (b) The packaged single RCSJ model without the bias current source.