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arXiv 2609.37210quant-phcs.DC

横向容错分布式量子计算中的编码与节点选择:初步研究

Encoding and Node Choices in Transversal Fault-Tolerant Distributed Quantum Computations: An Initial Study

Seng W. Loke

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中文总结 AI 辅助

本研究比较了双变量自行车编码和节点选择对横向容错分布式量子计算的影响,指出仅减少纠缠比特消耗并非最佳标准,并展示了特定编码可实现并发逻辑操作。

中文摘要 AI 辅助

我们比较并研究了不同的双变量自行车(BB)编码和节点选择,用于分布式量子操作,如横向非局部CNOT。我们观察到,虽然某些编码具有更多的物理量子比特,需要更多的纠缠比特(ebits)用于分布式计算,但如果目标是降低分布式计算的逻辑错误率,仅减少纠缠比特消耗可能不是选择逻辑量子比特编码的最佳标准;例如,还应考虑具有更大距离的编码,这些编码使用更多物理量子比特可以提供更好的性能。我们以分布式(或非局部)CNOT和全局门(GCZ)在分布式逻辑量子比特上的计算为例。编码的选择使得特定的并发操作成为可能;例如,我们展示了在自对偶$[[120,8,12]]$ BB码上,横向物理GCZ可以在考虑横向Hadamard诱导的逻辑置换后,实现八个并发的逻辑GCZ操作。

英文摘要

We compare and study different Bivariate-Bicycle (BB) encodings and node choices for distributed quantum operations such as transversal non-local CNOTs. We observe that while some encodings have more physical qubits requiring more ebits for a distributed computation, reducing ebit consumption alone might not be the best criterion for selecting an encoding for the logical qubits, if the goal is to reduce the logical error rate of the distributed computation; for example, one should also consider encodings with a larger distance, which using more physical qubits can provide. We consider distributed, or non-local, CNOTs and computation of the global gate (GCZ) over distributed logical qubits as examples. The choice of encoding enables particular concurrent operations; e.g., we show that a transversal physical GCZ on a self-dual $[[120,8,12]] BB$ code can realize eight concurrent logical GCZ operations after accounting for the logical permutation induced by transversal Hadamard.

发表机构

  • School of Information Technology, Deakin University(迪肯大学信息技术学院)

机构由 AI 辅助整理,请以论文原文为准。

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