Symposium B

Erika Kawakami received her Ph.D. from Delft University of Technology in the Netherlands and was a postdoctoral researcher at the Okinawa Institute of Science and Technology (OIST) in Japan before starting her research group at RIKEN. Her research focuses on quantum information processing using electrons on helium and solid neon.

Kenta Takeda is a Senior Scientist at RIKEN. He received his Doctor of Engineering in Applied Physics from the University of Tokyo. His research focuses on semiconductor quantum dots and their applications in quantum information processing. His key publications include pioneering work on high-fidelity single- and two-qubit gates, as well as the demonstration of three-qubit quantum error correction using silicon-based quantum-dot spin qubits. He is currently focused on developing multi-qubit control techniques and scalable quantum computing architectures for semiconductor-based quantum systems.

Sadashige Matsuo is an Associate Professor at Institute of Science Tokyo. He received his Ph.D. in Science from Kyoto University. His research explores quantum transport in nanoscale solid-state devices, with a particular focus on hybrid systems combining semiconductors and superconductors. By designing electrically tunable Josephson junctions and related nanostructures, he investigates how superconducting coherence gives rise to emergent quantum states such as Andreev molecules. His recent work aims to establish new ways to engineer and control superconducting transport, Josephson diode effect, and topological superconducting states, providing a foundation for future Majorana-based quantum devices and scalable superconducting quantum technologies.

Tomoyuki Horikiri is a Professor at Yokohama National University, working on experimental quantum communication and quantum networking. His research interests include quantum repeaters, rare-earth-ion quantum memories, narrowband entangled photon sources, wavelength conversion, and optical phase stabilization for long-distance quantum communication. After receiving his Ph.D. at University of Tokyo, he worked at Stanford University and the National Institute of Informatics. He is also a founder and Chief Scientific Officer of LQUOM, Inc., where he promotes the development of practical quantum repeater and quantum internet technologies.

Ross C. C. Leon is a Lead Quantum Engineer at Quantum Motion Technologies Ltd, a UK-based quantum computing start-up focused on scaling to millions of qubits by leveraging existing silicon CMOS fabrication technologies.
He earned his PhD in Electrical Engineering from University of New South Wales, Australia, where he conducted qubit experimental research on gate-defined silicon quantum dots.
At Quantum Motion, he leads the experimental team in advancing the company’s quantum hardware platform, focusing on the design and validation of Si-MOS qubit devices compatible with commercial fabrication and demonstrating unit cells for scalable qubit architectures.