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
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In superconducting qubits the suppression of logical error with increasing code size has been reported.
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In reconfigurable atom arrays fault-tolerant logic over hundreds of physical qubits has been demonstrated.
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Theory improvements to make QEC more hardware-efficient and first real-time decoders fast enough for all qubit types.
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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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DOI: https://doi.org/10.1038/s42254-024-00706-3
