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Researchers at the University of Edinburgh have developed scalable accreditation protocols that rigorously bound errors in near-term quantum computations using native non-Clifford gates like fSim and XY. This advancement eliminates the need for recompiling circuits into Clifford-only sets, which previously introduced significant depth overhead, thereby improving the practical reliability of current hardware platforms.

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Quantum Computers Gain Robust Error Checks with New Gate Families

Quantum ZeitgeistMay 22, 20265 min read

Quantum accreditation of circuits previously demanded all two-qubit gates be of the Clifford type, potentially increasing circuit depth by a factor of four. New protocols now extend accreditation to circuits utilising non-Clifford gates, such as those natively implemented on current quantum hardware. This advancement provides a means to rigorously upper-bound errors in near-term quantum computations.

Researchers at the University of Edinburgh, in collaboration with National Quantum Computing and the University of Warwick, have developed a family of scalable quantum accreditation protocols designed to rigorously define an upper bound on discrepancies between ideal and actual quantum calculations. The protocols address a critical challenge within the field of quantum computing, offering a practical and robust set of tools to assess the reliability of quantum circuits employing non-Clifford two-qubit gates. These gates, including families such as fSim and XY gates, are increasingly native to existing and developing quantum hardware platforms, making this advancement particularly…

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