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Highlights of 2023

A series of fast-paced advances in Quantum Error Correction

Nature Reviews Physics volume 6, pages 160–161 (2024)Cite this article

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Over the past few years, and most notably in 2023, quantum error correction has made big strides, shifting the community focus from noisy applications to what can be achieved with early error-corrected quantum computers. But despite the breakthroughs in experiments with trapped ions, superconducting circuits and reconfigurable atom arrays there are still several technological challenges — unique to each platform — to overcome.

Key Advances

  • In superconducting qubits the suppression of logical error with increasing code size has been reported.

  • In reconfigurable atom arrays fault-tolerant logic over hundreds of physical qubits has been demonstrated.

  • Theory improvements to make QEC more hardware-efficient and first real-time decoders fast enough for all qubit types.

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Fig. 1: A surface code capable of correcting any two errors, using 49 qubits including auxiliary qubits.

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Authors and Affiliations

  1. Riverlane, Cambridge, UK

    Earl Campbell

  2. Department of Physics and Astronomy, University of Sheffield, Sheffield, UK

    Earl Campbell

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  1. Earl Campbell
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Correspondence to Earl Campbell.

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The author declares no competing interests.

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Campbell, E. A series of fast-paced advances in Quantum Error Correction. Nat Rev Phys 6, 160–161 (2024). https://doi.org/10.1038/s42254-024-00706-3

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