使用Transmon实现高保真纠缠逻辑量子比特
量子物理
2026-03-06 v2
摘要
量子纠错（QEC）码是容错运行量子计算机所必需的。然而，每一个此类编码本身都受限于其无法检测逻辑错误的局限性。本文提出并实现一种方法，利用动态脱落（DD）来大幅抑制逻辑错误的技术。实现这一点的关键在于将QEC码的逻辑算子用作DD脱落脉冲，我们将其称为逻辑动态脱落（LDD）。 resulting的混合QEC-LDD策略原则上能够处理任意权重的错误。我们使用IBM transmon设备和[[4,2,2]]码测试QEC-LDD，展示的性能显著超过仅使用该编码或DD的能力。我们 presented a method that allows for the detection of logical errors affecting logically encoded Bell states, which, in this case, arise primarily from crosstalk among physical qubits. Building on this, we experimentally demonstrate high-fidelity entangled logical qubits.
引用
@article{arxiv.2503.14472,
title = {Demonstration of High-Fidelity Entangled Logical Qubits using Transmons},
author = {Arian Vezvaee and Vinay Tripathi and Mario Morford-Oberst and Friederike Butt and Victor Kasatkin and Daniel A. Lidar},
journal= {arXiv preprint arXiv:2503.14472},
year = {2026}
}