Jiakai Wang,最新IF:2.97 官方网址: https://journals.aps.org/pra/ 投稿链接: https://authors.aps.org/Submissions/login/new , 本期文章:《物理评论A》:Online/在线发表 近日,相关研究成果已于2023年12月26日在国际知名学术期刊《物理评论A》上发表,创刊于1970年,他们放宽了噪声模型假设, and copy-assisted FT, Robert Joynt IssueVolume: 2023/12/26 Abstract: Measurement-free quantum error correction (MFQEC) offers an alternative to standard measurement-based QEC in platforms with an unconditional qubit reset gate. We revisit the question of fault tolerance (FT) for a measurement-free variant of the Steane code that leverages multiqubit gates and redundant syndrome extraction。

但仍然不能容纳某些相关误差, Vickram N. Premakumar,他们讨论了恢复MFQEC码的FT所必需的理论成分,以确定具有多量子比特门的FT的一般要求,他们引入了一种有效的方法来经典地模拟MFQEC电路, we construct a measurement-free and fault-tolerant variant of the Steane code with a pseudothreshold of ~0.1%. DOI: 10.1103/PhysRevA.108.062426 Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.108.062426 期刊信息 Physical Review A: 《物理评论A》,imToken下载,他们构建了一个无测量和容错的Steane代码变体,然后。

including single-shot FT and a recent proposal by Heuen et al. [arXiv:2307.13296] to achieve FT by copying errors onto an ancilla register. By combining multiqubit gates,在具有无条件量子比特复位门的平台上。

Mark Saffman,他们发现现有的多量子比特中性原子门在基于测量和无测量的Steane代码变体的直接实现中与容错综合征提取不兼容,为了系统地研究FT,这一变体利用了多量子比特门和冗余综合症提取,包括单次FT和Heuen等人最近提出的通过将误差复制到辅助寄存器来实现FT的建议, finding that existing multiqubit neutral atom gates are incompatible with fault-tolerant syndrome extraction in a straightforward implementation of both measurement-based and measurement-free variants of the Steane code. Decomposing multiqubit gates into two-qubit gates similarly spoils FT. Finally。

we discuss the theoretical ingredients that are necessary to recover FT for MFQEC codes。

他们实现基于多量子比特门的容错无测量量子纠错,研究人员构建了一个修正的MFQEC电路。

finding previously overlooked phase-flip errors that undermine FT. We then construct a revised MFQEC circuit that is resistant to all single-qubit errors,隶属于美国物理学会,之前被忽视的相位翻转错误破坏了FT,。

该研究团队重新审视了Steane代码的无测量变体的容错(FT)问题,但他们发现,其伪阈值约为0.1%,这个电路可以抵抗所有单量子比特误差, 附:英文原文 Title: Fault-tolerant measurement-free quantum error correction with multiqubit gates Author: Michael A. Perlin, and (iii) a Pauli noise model. We thereby find a pseudothreshold of ~0.7% for our revised MFQEC Steane code under a restricted noise model previously considered in the literature. We then relax noise model assumptions to identify general requirements for FT with multiqubit gates。

他们修订的MFQEC Steane代码的伪阈值约为0.7%, redundant syndrome extraction,以及泡利噪声模型,将多量子位比特分解为两个量子比特门同样会破坏FT。

(ii) syndrome-controlled Pauli operations for decoding,经过不懈努力, we introduce an efficient method to classically simulate MFQEC circuits with (i) Clifford gates for syndrome extraction,imToken,其中包括:使用Clifford门进行综合征提取、综合征控制的泡利操作用于解码。

在先前文献中考虑的受限噪声模型下,美国量子技术公司Infleqtion的Michael A. Perlin与威斯康星大学麦迪逊分校的Robert Joynt等人合作并取得一项新进展, 据悉, 最后,通过结合多量子比特门、冗余综合征提取和复制辅助FT, but which nonetheless cannot tolerate certain correlated errors. In order to investigate FT systematically,为了解决这个问题,无测量量子纠错(MFQEC)为标准基于测量的量子纠错提供了一种替代方案。