Computing with many encoded logical qubits beyond break-even

S. Dasu et al. · 2026 · arXiv

| 编号 QE367 | 主题 硬件实验与里程碑 | 链接 arXiv:2602.22211 |

摘要

摘要保留原文（英文）

摘要取自 arXiv / 出版方元数据，未作翻译，以保证与原文一致。

High-rate quantum error correcting (QEC) codes encode many logical qubits in a given number of physical qubits, making them promising candidates for quantum computation. Implementing high-rate codes at a scale that both frustrates classical computing and improves performance by encoding requires both high fidelity gates and long-range qubit connectivity — both of which are offered by trapped-ion quantum computers. Here, we demonstrate computations that outperform their unencoded counterparts in the high-rate $[[k+2,,k,,2]]$ iceberg quantum error detecting (QED) and $[[(k_2+2)(k_1+2),,k_2{k}_1,,4]]$ two-level concatenated iceberg QEC codes, using the 98-qubit Quantinuum Helios trapped-ion quantum processor. Utilizing new gadgets for encoded operations, we realize this”beyond break-even”performance with reasonable postselection rates across a range of fault-tolerant (FT) and partially-fault-tolerant (pFT) component and application benchmarks with between $48$ and $94$ logical qubits. These benchmarks include FT state preparation and measurement, QEC cycle benchmarking, logical gate benchmarking, GHZ state preparation, and a pFT quantum simulation of the three-dimension

本站词条在引用该文献时，会以 wikilink（sources/QE367）链接到本页；右侧「反向链接」面板自动列出所有引用它的词条。