NVIDIA Simulates Record 104-Qubit Fault-Tolerant Protocol on JUPITER

What happened

NVIDIA announced on October 19, 2026, what it described as a record-breaking quantum computing simulation on JUPITER, Europe's first exascale supercomputer: a 104-qubit run executed on 8,192 NVIDIA GH200 GPUs (a chip built for many calculations at once, used for graphics and AI) at Jülich Supercomputing Centre that models how a realistic quantum processor performs fault-tolerant computation. Huang said the Jülich results show that quantum processors and GPU supercomputers can work together on research that would otherwise be out of reach. NVIDIA is a semiconductor company based in Santa Clara, and its products and services include graphics processing units.

Kristel Michielsen, director of the Jülich Supercomputing Centre at Forschungszentrum Jülich, said Europe’s investment in JUPITER gives researchers the ability to investigate questions that were previously beyond reach, and that the collaboration with NVIDIA brings that capability to quantum computing. Magic States, Codes and a Realistic Noise Model Qubits operate at the limits of physics, and the interactions needed to control them introduce unavoidable, error-inducing noise, NVIDIA’s announcement explains.

What NVIDIA Says the Run Validates NVIDIA describes the 104-qubit simulation as the largest comprehensive simulation of a fault-tolerant quantum processor to date, saying no prior simulations have modeled quantum processors in such full detail. According to the company, the run validates magic-state cultivation, an approach to fault-tolerant quantum computing that requires 90% fewer physical qubits than previous methods.