Noise temperature distribution of superconducting hot electron bolometer mixers

Zhou Kang-Min^{1, 2}, Miao Wei^{1, 2}, Geng Yue^{1, 2, 4}, Delorme Yan³, Zhang Wen^{1, 2}, Ren Yuan^{1, 2}, Zhang Kun^{1, 2}, Shi Sheng-Cai^{1, 2, †}

Measured DSB receiver noise temperature T_rec in a two-dimensional graph of the bias voltage and current at (a) 0.2 THz, (b) 0.5 THz, (c) 0.85 THz, and (d) 1.34 THz. The isoline indicates the absolute value of T_rec.