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arXiv 2302.04889cond-mat.mes-hallcond-mat.supr-con
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磁体-超导体异质结构中拓扑量子门的实现

Implementation of Topological Quantum Gates in Magnet-Superconductor Hybrid Structures

University of Illinois at Chicago(芝加哥伊利诺伊大学);University of Melbourne(墨尔本大学)

Jasmin Bedow, Eric Mascot, Themba Hodge, Stephan Rachel, Dirk K. Morr

AI总结:

针对拓扑量子计算中利用马约拉纳零能模构建拓扑量子门的难题,研究人员提出基于电子自旋共振操控单原子自旋的编织协议,在二维磁体-超导体异质结构中成功实现多种受拓扑保护的量子门,并可视化了编织过程。

摘要:

利用马约拉纳零能模构建拓扑量子门是拓扑量子计算领域的一个悬而未决的关键问题,其实现依赖于我们在时间和空间上操控这些粒子编织过程的能力。本文展示了在二维磁体-超导体异质结构中,利用马约拉纳零能模成功实现了受拓扑保护的√σ_z、σ_z和σ_x量子门。我们提出了一种编织协议,该协议利用了电子自旋共振技术操控单个原子自旋能力的最新进展。通过计算非平衡局域态密度(与扫描隧道谱实验中测量的时间依赖微分电导成正比),我们在时间和空间上可视化了该编织过程。

英文摘要:

The creation of topological quantum gates using Majorana zero modes -- an outstanding problem in the field of topological quantum computing -- relies on our ability to control the braiding process of these particles in time and space. Here, we demonstrate the successful implementation of topologically protected $\sqrt{σ_z}$-, $σ_z$- and $σ_x$-quantum gates using Majorana zero modes in two-dimensional magnet-superconductor hybrid structures. We propose a braiding protocol that makes use of recent advances in the ability to control the spin of individual atoms using electron-spin-resonance techniques. We visualize the braiding process in time and space by computing the non-equilibrium local density of states, which is proportional to the time-dependent differential conductance measured in scanning tunneling spectroscopy experiments.

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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