Sixty years of innovation: how would we use a quantum computer?

Quantum computing remains 10 years away, but the meaning of that timeline has shifted—from a lower bound two decades ago to an upper bound today, indicating real progress. Quantum computers will act as hardware accelerators for exponentially complex problems, particularly in quantum chemistry and materials science, where classical systems hit computational walls. Integration with AI and HPC is key, with AI aiding quantum systems in calibration and control, while quantum generates high-fidelity data for AI to process.

It clarifies the realistic timeline, technical constraints, and complementary role of quantum computing alongside AI and HPC, cutting through hype with grounded expert insight.

1. 01The '10 years away' timeline for practical quantum computing has evolved from a hopeful minimum to a likely maximum, signaling increased confidence in near-term realization.
2. 02Quantum computers will not replace classical systems but serve as specialized accelerators for problems involving quantum data, such as molecular simulation and materials discovery.
3. 03Cryptographically relevant quantum computers could emerge in 5–10 years, with recent estimates suggesting as few as 100,000 physical qubits may suffice—far fewer than previously thought.