论文标题
电子显微镜作为量子门
The electron microscope as a quantum gate
论文作者
论文摘要
我们建议使用拓扑电荷而不是旋转变量，以跨越透射电子显微镜（TEM）中梁电子的二维希尔伯特空间。在此基础上，可以将电子视为自由漂浮在真空中的Qbit。我们展示了将磁性四极杆与磁性漂移管的组合如何用作通用装置，以通过实验者的判断力来操纵此类QBIT。具有像差校正器，远光灯相干性和最大稳定性的高端TEMS是用于此类实验的有前途的平台，可以在显微镜中构建单束电子电子的量子逻辑门。
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.
