Microsoft and Quantinuum demonstrate universal anyon gates on 54 qubits
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Researchers at Microsoft and Quantinuum have demonstrated universal topological quantum gates by braiding and fusing non-Abelian anyons on a 54-qubit quantum processor. The experiment, published in Nature on July 15, 2026, realized S3 topological order and showed that combining anyon braiding with fusion enables universal quantum computation. The result marks the first experimental implementation of a universal gate set using anyons.
The Experiment
The team used a 54-qubit processor to create a non-Abelian S3 topological state, where anyons emerge as quasiparticle excitations. By braiding and fusing these anyons, they implemented a universal set of quantum gates, including the Hadamard and T gates. The fidelity of the braiding operations exceeded 95%, as measured by randomized benchmarking.
Significance for Quantum Computing
Topological quantum computing promises inherent error resistance, as information is stored non-locally in the braiding history of anyons. This demonstration shows that universal computation is possible with anyons, overcoming a key theoretical hurdle. Previous experiments had only shown non-universal anyon braiding.
What's Next
The team plans to scale the system to more qubits and improve gate fidelities. It remains unclear whether topological qubits can outperform conventional superconducting qubits in practical quantum computers.
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Microsoft and Quantinuum demonstrate universal anyon gates on 54 qubits
