Xueshen Wang received his B.Sc. degree in optical information science and technology from Xi’an Jiaotong University, Xi’an, China, in 2006, and his Ph.D. degree in physics from Tsinghua University, Beijing, China, in 2011. He is currently a Research Fellow at the National Institute of Metrology, Beijing, China. His research topics mainly include superconducting transition edge sensors, superconducting quantum interference devices, and superconducting flux quantum devices.