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This breakthrough demonstrates that combining anyon braiding with fusion operations on Quantinuum's H2 processor enables a universal gate set using the S3 topological order. By preparing a scalable 54-qubit ground state, this work addresses critical limitations in earlier approaches and establishes a viable pathway toward fault-tolerant quantum computation through intrinsic error protection.
Quantinuum’s 54-Qubit Chip Braids & Fuses Anyons for Gates

Published in Nature, researchers at Quantinuum demonstrated universal gates using a 54-qubit processor, braiding and fusing anyons to manipulate quantum information.
Quantinuum researchers have successfully prepared a 54-qubit ground state to manipulate anyons, moving beyond standard qubit control and into a new area of quantum computation. The team demonstrated quantum gates not simply by braiding these exotic particles, a previously explored concept, but by incorporating their fusion as a computational step. This advance utilizes the quantum double of S3, the smallest non-Abelian group, suggesting a potentially scalable path toward fault-tolerant quantum processing. The work demonstrates that the S3 topologically ordered state…
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