The electron microscope as a quantum gate
Quantum Physics
2020-05-19 v1
Abstract
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.
Keywords
Cite
@article{arxiv.2005.07936,
title = {The electron microscope as a quantum gate},
author = {Peter Schattschneider and Stefan Löffler},
journal= {arXiv preprint arXiv:2005.07936},
year = {2020}
}