T4IS2026 Strategy Dialogue 'Next-Gen Computing: Quantum x AI' - Discussing 'Q-Day' and Transition to Post-Quantum Cryptography

Socious Inc. hosted a closed-door 'Strategy Dialogue' at the 'Tech for Impact Summit 2026' in Tokyo. The session highlighted that the timeline for practical Fault-Tolerant Quantum Computing (FTQC) has compressed to 5-8 years. While Japan has seen a tenfold increase in quantum investments reaching billions of dollars, it faces a shortage of researchers, making 'component infrastructure' and quantum networking strategic opportunities. The discussion emphasized the urgency of preparing for 'Q-Day'—when quantum computers can break classical encryption—with a target to transition to post-quantum cryptography by 2035. The dilemma of incumbent companies adopting paradigm-shifting technologies was also examined.