A new quantum computer breaks Google's quantum supremacy record by 100-fold

Quantinuum's new 56-qubit quantum computer surpasses Google's 2019 quantum supremacy record by 100-fold, achieving significant error correction milestones.

: Quantinuum has claimed a new quantum supremacy record with its 56-qubit H2-1 computer, outperforming Google's Sycamore by 100-fold. Utilizing Random Circuit Sampling, Quantinuum achieved an XEB score of ~0.35 and showcased unprecedented error correction capabilities. This advancement indicates a major step towards fault-tolerant quantum computing, potentially rendering classical supercomputers obsolete for certain tasks.

Quantinuum declared a major breakthrough in quantum computing, surpassing Google's 2019 quantum supremacy record by 100-fold with its new 56-qubit H2-1 computer. The company detailed its findings in a study on arXiv, emphasizing it reached an error correction performance threshold previously thought to be years away.

Quantinuum ran experiments over several months in 2024, achieving an estimated XEB score of ~0.35 using the Random Circuit Sampling algorithm, a significant improvement over Google's XEB score of approximately 0.002. The H2-1 was configured with 32 physical qubits, creating more reliable logical qubits and indicating a step towards fault-tolerant quantum computing.

The logical circuit error rates in Quantinuum's device were up to 800x lower than those of the physical circuits, a feat unmatched by other quantum computing companies. This advancement allows quantum computers to handle longer and more complex calculations with better noise and decoherence protection, pushing classical supercomputers further into obsolescence for specific computational tasks.

Quantum Computingerror correctionQuantinuum