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arXiv 2005.07936quant-ph
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作为量子门的电子显微镜

The electron microscope as a quantum gate

Peter Schattschneider, Stefan Löffler

摘要:

本文提出在透射电子显微镜(TEM)中用拓扑荷代替自旋变量来跨越二维希尔伯特空间。在此基础上,电子可以被看作是在真空中自由浮动的量子比特。我们展示了如何结合磁四极与磁漂移管可以作为一个通用的设备来操纵这样的量子比特在实验者的自由裁量权。具有像差校正器、高光束相干性和极高稳定性的高端TEM是此类实验的一个有前途的平台,可以在显微镜中为单束电子构建量子逻辑门。

英文摘要:

We propose to use the topological charge instead of the spin variable to span a two-dimensional Hilbert space for beam electrons in a transmission electron microscope (TEM). In this basis, an electron can be considered as a qbit freely floating in vacuum. We show how a combination of magnetic quadrupoles with a magnetic drift tube can serve as a universal device to manipulate such qbits at the experimenter's discretion. High-end TEMs with aberration correctors, high beam coherence and utmost stability are a promising platform for such experiments, allowing the construction of quantum logic gates for single beam electrons in a microscope.

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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