On March 4–5, 2025, the Moonshot Goal 6 Public Symposium and Internal General Meeting were held at Bellesalle Akihabara.

On the first day (March 4), the public symposium took place both on-site and online, where 12 project managers, including Professor Hideo Kosaka, presented their research progress and deepened inter-project collaboration. Professor Kosaka gave a presentation on the “Development of Quantum Interfaces for Quantum Computing Networks,” outlining a path toward the realization of a superconducting-optical hybrid quantum computer through high-speed optical connections between superconducting qubits using a “microwave-optical quantum interface” based on diamond nitrogen-vacancy centers and resonators. He also reported on the development status and performance evaluation of key technologies, as well as theoretical estimates of conversion efficiency.

On the second day (March 5), the internal general meeting was held on-site only. Building on the presentations from the previous day, poster sessions were conducted, fostering in-depth discussions on project outcomes and future prospects. Nine members from Kosaka Lab presented their research and actively engaged in discussions.