Our visitor Dr. Shunji Matsuura from 1QBit, a startup company specializes in quantum computing and quantum information technology based in Vancouver, Canada gave a series of lectures from May 13 (Mon) through May 15 (Wed). Dr. Matsuura started with a basic explanation of qubits and their entanglement. Then, he moved on to explain various method employed in the field of quantum computing, such as Variational Quantum Eigensolver (VQE). His explanation was especially clear to physicists, since Dr. Matsuura’s background is string theory receiving his Ph.D. in string theory from the Perimeter Institute for Theoretical Physics and the University of Tokyo, and he used to conduct research at the Kavli Institute for Theoretical Physics (University of California, Santa Barbara), McGill University, Riken, YITP (Kyoto University), and the Niels Bohr Institute (University of Copenhagen). His current research focuses on the fundamental aspects of quantum-enhanced optimization, such as error correction and speedup, which are also of interest to some iTHEMS members, and we are hoping a lot of fruitful collaborations between iTHEMS and Dr. Matsuura as well as 1QBit group in future.