Fujitsu & Osaka U: Quantum Computing Breakthrough for Drug Discovery

Fujitsu & Osaka University Quantum Computing Breakthrough: STAR V3 Accelerates Drug Discovery

On March 25, 2026, Fujitsu and Osaka University announced a major quantum computing breakthrough: STAR architecture V3 combined with molecular model optimization dramatically reduces resources and time for chemical material energy calculations - previously infeasible on classical computers.

STAR evolution: V1 (March 2023) established foundation, V2 (August 2024) improved efficiency, V3 (March 2026) integrates phase rotation gates with logical-T gates for more complex molecular calculations without additional qubits while lowering physical error rate requirements.

Molecular optimization minimizes quantum circuit gate counts, directly reducing computation time and cumulative error.

Performance: ~35 days at 0.10% qubit error rate, ~10 days at 0.01% (vs millions of years classically).

Applications: Drug discovery (molecular screening from years to weeks), catalyst design, ammonia synthesis optimization (Haber-Bosch consumes 1-2% of global energy), carbon recycling, financial modeling.

Japan's quantum strategy: maximizing practical computational capability within limited resources rather than pursuing qubit count records - consistent with Japan's engineering philosophy of optimization under constraints.

STAR V3 marks quantum computing's transition from "can we do this?" to "how quickly can we do this?" - pragmatic algorithmic innovation over waiting for perfect hardware.