Shu Tanaka is an Assistant Professor at the Waseda Institute for Advanced Study, Waseda University, Tokyo. He is also PRESTO Researcher at the Japan Science and Technology Agency (JST). He has worked in various fields of the theory of statistical physics, materials science, and quantum information theory. He has studied both fundamental and application sides of quantum annealing, and has also edited three books on quantum computing. He was a recipient of the 9th Award for the Encouragement of Young Physicists from the Physical Society of Japan (2015). Ryo Tamura is a researcher at the International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Ibaraki, Japan. He has worked in the field of materials science and, in particular, his research interests focus on magnetic materials, including random spin systems and materials informatics. Bikas K. Chakrabarti is Professor of Theoretical Condensed Matter Physics at the Saha Institute of Nuclear Physics (SINP), Kolkata, India. His research interests include physics of fracture, quantum glasses and the interdisciplinary sciences of optimisation, brain modelling, and econophysics. Professor Chakrabarti is a recipient of the S. S. Bhatnagar Award (1997). He has also received the Outstanding Referee Award of the American Physical Society (2010). He is a Fellow of the Indian National Science Academy and the Indian Academy of Sciences.