Beyond NISQ: The Dawn of the Megaquop Machine
Caltech's John Preskill delivered a keynote address at the Q2B 2024 conference, discussing the potential transition from the NISQ (Noisy Intermediate-Scale Quantum) era to the Megaquop (million quantum operations) era. Megaquop machines are envisioned to execute millions of quantum operations, albeit with a still-high error rate. Through error mitigation techniques and potentially higher-quality physical qubits, they could achieve tasks beyond the reach of classical computers and NISQ machines. Significant progress from teams at Google, AWS, and others in quantum error correction and hardware improvements lays the groundwork for Megaquop machines. However, Preskill highlighted challenges including decoding speed for quantum error correction, mitigating cosmic ray interference, and identifying commercially viable applications. Future applications of Megaquop machines might include simulations of complex quantum systems and materials science research.
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