1. Y. Ren, D. Zhang, K. Zhou, W. Miao, W. Zhang, S. Shi, V. Seleznev, I. Pentin, Y. Vakhtomin, and K. Smirnov, “10.6 μm heterodyne receiver based on a superconducting hot-electron bolometer mixer and a quantum cascade laser,” AIP Adv. 9, 075307 (2019).
2. W. Carter Faustin, T. Khaire, C. Chang, and V. Novosad, “Low-loss single-photon NbN microwave resonators on Si,” Appl. Phys. Lett. 115, 092602 (2019).
3. L. Wu, L. Chen, H. Wang, Q. Wang, H. Wo, J. Zhao, X. Liu, X. Wu, and Z. Wang, “Measurement of Meissner effect in micro-sized Nb and FeSe crystals using an NbN nano-SQUID,” Supercond. Sci. Technol. 30, 074011(5 pp) (2017).
4. S. Solve, R. Chayramy, M. Maruyama, C. Urano, N.-H. Kaneko, and A. Rüfenacht, “Direct DC 10 V comparison between two programmable Josephson voltage standards made of niobium nitride (NbN)-based and niobium (Nb)-based Josephson junctions,” Metrologia 55, 302–313 (2018).
5. Y. Suzuki, N. Iguchi, K. Adachi, A. Ichiki, T. Hioki, C.-W. Hsu, R. Sato, S. Kumagai, M. Sasaki, J.-H. Noh, Y. Sakurahara, K. Okabe, O. Takai, H. Honma, H. Watanabe, H. Sakoda, H. Sasagawa, H. Doy, S. Zhou, H. Hori, S. Nishikawa, T. Nozaki, N. Sugimoto, and T. Motohiro, “Complete fabrication of a traversable 3 μm thick NbN film superconducting coil with Cu plated layer of 42 m in length in a spiral three-storied trench engraved in a Si wafer of 76.2 mm in diameter formed by MEMS technology for a compact SMES with high energy storage volume density,” J. Phys.: Conf. Ser. 897. Conf. 1, 012019 (2017).