Quantum devices exploit quantum-mechanical effects such as coherence, tunneling, and nonlinearity to realize functionalities that are difficult to achieve with conventional classical electronics. Among them, superconducting circuits based on Josephson junctions are regarded as one of the most promising platforms for quantum information processing, as they enable controllable qubits and scalable circuit architectures.

Our lab studies quantum computing devices based on Josephson junctions. In particular, we explore creative quantum device concepts that may overcome key challenges of current quantum hardware, such as scale-up and large-scale integration. We are also interested in new quantum phenomena that emerge in these artificial superconducting systems.

Spintronic devices utilize not only the electron’s charge but also its spin degree of freedom to store, transmit, and control information. This enables next-generation technologies with advantages in speed, energy efficiency, nonvolatility, and new computing functionalities. Spintronics also encompasses a wide range of physical phenomena, making it both fundamentally interesting and highly promising for future information devices.

Our lab studies spintronic devices based on magnetization dynamics and chiral magnetic phenomena. One of our main research directions is spin dynamics, with a particular focus on domain-wall dynamics. Beyond understanding the fundamental physics of magnetic textures and their motion, we also explore how these effects can be utilized in functional spintronic devices such as sensors, memory, and unconventional computing devices.