T4IS2026 Strategy Dialogue: The Next Compute Paradigm - Quantum and AI and the Discussion on 'Q-Day' and Post-Quantum Cryptography Migration

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Sothius Inc. held a closed-door 'Strategy Dialogue' session at the Tech for Impact Summit 2026, discussing the acceleration of quantum computing, its integration with AI, and the critical need for post-quantum cryptography migration.

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Sothius Inc. held a closed-door 'Strategy Dialogue' session at the Tech for Impact Summit 2026, discussing the acceleration of quantum computing, its integration with AI, and the critical need for post-quantum cryptography migration.

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Source: https://prtimes.jp/main/html/rd/p/000000049.000087132.html | Date: Date unavailable

Points of this release: - The timeline for quantum computing has compressed from the long-standing '10-15 years' to a credible '5 years'. Practical algorithms are now positioned for the era of Fault-Tolerant Quantum Computing (FTQC) in 5-8 years. - Japan has ample funds but lacks researchers. Investment in quantum has grown about 10-fold year-on-year to the multi-billion dollar scale, but the layer of researchers and operators capable of absorbing those funds is thin. Japan's opportunity was identified in 'component infrastructure'. - Investment attractiveness lies in the 'selling shovels to miners' layer. Networking is essential for connecting multiple quantum devices for FTQC, and quantum networking and sensing companies were positioned as the commercial layer that will emerge before full-stack quantum platforms. - 'Q-Day'—the day quantum computers break classical encryption—was treated as the most disruptive near-future event. Attacks like 'collect now, decrypt later' are already underway, and the US is calling for a transition to post-quantum cryptography by 2035. - The dilemma of existing large corporations (incumbents) was discussed. The risk of making the wrong bet for market leaders is asymmetric, and 'it is easier to be a great second customer than a great first customer'. Session Overview Sothius Inc. (Headquarters: Chuo-ku, Tokyo; Representative Director: Sera Yun) conducted a closed-door session, 'Strategy Dialogue,' at the invitation-only executive summit 'Tech for Impact Summit 2026' (https://tech4impactsummit.com/ja) held at the Tokyo Garden Terrace Kioicho Kioi Conference on Sunday, April 26, 2026. This release summarizes the discussion from one of the sessions: 'The Next Compute Paradigm: Where Quantum Meets AI.' This session was conducted under Chatham House Rules. Therefore, this release records the themes, points, and proposals discussed, and does not attribute specific remarks to individuals or organizations. Participants included practitioners

T4IS2026 Strategy Dialogue: The Next Compute Paradigm - Quantum and AI and the Discussion on 'Q-Day' and Post-Quantum Cryptography Migration

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