Improved Error Thresholds for Measurement-Free Error Correction
Crow, Daniel, Joynt, Robert, Saffman, M. · 2016 · Physical Review Letters
| 编号 NA140 | 主题 实验架构与容错 | DOI 10.1103/physrevlett.117.130503 |
摘要
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2016 · Physical Review Letters Motivated by limitations and capabilities of neutral atom qubits, we examine whether measurement-free error correction can produce practical error thresholds. We show that this can be achieved by extracting redundant syndrome information, giving our procedure extra fault tolerance and eliminating the need for ancilla verification. The procedure is particularly favorable when multi-qubit gates are available for the correction step. Simulations of the bit-flip, Bacon-Shor, and Steane codes indicate that coherent error correction can produce threshold error rates that are on the order of to ---comparable with or better than measurement-based values, and much better than previous results for other coherent error correction schemes. This indicates that coherent error correction is worthy of serious consideration for achieving protected logical qubits.
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