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arXiv 2107.08049quant-phphysics.app-ph
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三维拓扑量子计算

3D Topological Quantum Computing

Torsten Asselmeyer-Maluga

摘要:

在本文中,我们将提出一些想法,使用三维拓扑结构的量子计算扩展的想法,从以前的文件。拓扑量子计算使用\textquotedblleft将物质的拓扑相的\textquotedblright{}量子态打结,称为任意子。但任意子是与表面拓扑学相连的。但是曲面(通常)具有阿贝尔基本群,因此需要非阿贝尔任意子才能将其用于量子计算。但通常的材料是3D对象,可以容纳更复杂的拓扑结构。在这里,纽结的补集起着重要的作用,原则上是理解三维流形拓扑的主要部分。为此,我们将在3-球面中的纽结的补集上构造一个量子系统(参见arXiv:2102.04452以前的工作)。整个系统被设计成打结超导体,其中每个交叉点是一个约瑟夫森结,量子比特被实现为通量量子比特。我们利用纽结的A-多项式讨论了这类系统的性质,特别是流量子化。此外,我们表明,2量子比特操作可以实现链接(打结)超导体再次耦合通过约瑟夫森结。

英文摘要:

In this paper we will present some ideas to use 3D topology for quantum computing extending ideas from a previous paper. Topological quantum computing used \textquotedblleft knotted\textquotedblright{} quantum states of topological phases of matter, called anyons. But anyons are connected with surface topology. But surfaces have (usually) abelian fundamental groups and therefore one needs non-abelian anyons to use it for quantum computing. But usual materials are 3D objects which can admit more complicated topologies. Here, complements of knots do play a prominent role and are in principle the main parts to understand 3-manifold topology. For that purpose, we will construct a quantum system on the complements of a knot in the 3-sphere (see arXiv:2102.04452 for previous work). The whole system is designed as knotted superconductor where every crossing is a Josephson junction and the qubit is realized as flux qubit. We discuss the properties of this systems in particular the fluxion quantization by using the A-polynomial of the knot. Furthermore we showed that 2-qubit operations can be realized by linked (knotted) superconductors again coupled via a Josephson junction.

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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