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arXiv 1004.3791quant-phcond-mat.str-el
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马约拉纳费米子码

Majorana Fermion Codes

Sergey Bravyi, Bernhard Leemhuis, Barbara M. Terhal

摘要:

我们开始研究马约拉纳费米子码。这些代码可以被视为扩展Kitaev的1D模型的不成对的马约拉纳费米子在量子线到更高的空间维度和相互作用的费米子。马约拉纳费米子码(MFC)的目的是保护量子信息免受低权重费米子错误的影响,即算符作用于足够小的费米子模式子集。我们研究在何种程度上MFC可以超越量子位稳定剂代码在其稳定性。提出了一种基于宏观码距的拓扑保护和基于费米子宇称守恒的保护相结合的二维MFC的一般结构。最后,我们使用MFC来展示如何将任何量子位稳定器代码转换为弱自对偶CSS代码。

英文摘要:

We initiate the study of Majorana fermion codes. These codes can be viewed as extensions of Kitaev's 1D model of unpaired Majorana fermions in quantum wires to higher spatial dimensions and interacting fermions. The purpose of Majorana fermion codes (MFCs) is to protect quantum information against low-weight fermionic errors, that is, operators acting on sufficiently small subsets of fermionic modes. We examine to what extent MFCs can surpass qubit stabilizer codes in terms of their stability properties. A general construction of 2D MFCs is proposed which combines topological protection based on a macroscopic code distance with protection based on fermionic parity conservation. Finally, we use MFCs to show how to transform any qubit stabilizer code to a weakly self-dual CSS code.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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