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Neutral-atom platforms utilizing three-qubit Rydberg gates demonstrate competitive logical qubit performance while significantly reducing the need for complex qubit shuttling operations. This approach enables measurement-free quantum error correction and offers hardware design flexibility through optimized CCZ gates, supported by new open-source tools for pulse generation. The findings suggest a viable pathway to scaling fault-tolerant quantum processors by addressing critical physical movement hurdles.

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Three-Qubit Gates Yield Competitive Logical Qubit Performance

Quantum ZeitgeistJune 9, 20265 min read

Multiqubit Rydberg gates are being investigated for use in fault-tolerant quantum error correction on single-species neutral-atom platforms, utilizing global laser pulses. Simulations suggest that these three-qubit gates can provide competitive logical qubit performance, potentially reducing the need for complex operations.

Researchers are leveraging three-qubit gates in neutral-atom platforms to push the boundaries of quantum error correction, potentially easing a critical challenge in scaling these systems. A new analysis reveals that applying these gates for stabilizer measurements in Floquet codes can yield competitive logical qubit performance and lead to a significant reduction in shuttling operations, a major hurdle for physically moving qubits within a computer. The work focuses on controlled-controlled-Z (CCZ) gates, analyzed for both symmetric and asymmetric atomic arrangements, demonstrating flexibility in hardware design. To aid in this effort, the team has…

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