Jahyun Koo (Member, IEEE) received the B.S. degree in electronic and electrical engineering from Hongik University, Seoul, South Korea, in 2014, and the M.S. and Ph.D. degrees in electronic and electrical engineering from the Pohang University of Science and Technology (POSTECH), Pohang, South Korea, in 2016 and 2021, respectively. From 2021 to 2023, he was a Post-Doctoral Researcher with the University of California at Santa Barbara, Santa Barbara, CA, USA. He is currently an Assistant Professor in semiconductor systems engineering with Sejong University, Seoul, South Korea. His research interests include low-noise, low-power oscillators, sensor interface circuits, and digital accelerator quantum annealing.