Löffler, S., Schachinger, T., Hartel, P., Lu, P.-H., Dunin-Borkowski, R., Obermair, M., Dries, M., Gerthsen, D., & Schattschneider, P. (2022). A quantum logic gate for free electrons. arXiv. https://doi.org/10.34726/4141
E057-02 - Fachbereich Universitäre Serviceeinrichtung für Transmissions- Elektronenmikroskopie E057 - Facilities und Zentren E138 - Institut für Festkörperphysik
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ArXiv ID:
2209.07123
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Date (published):
15-Sep-2022
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Number of Pages:
6
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Preprint Server:
arXiv
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Keywords:
Free electron; quantum logic gate; TEM
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Abstract:
The topological charge m of vortex electrons spans an infinite-dimensional Hilbert space. Selecting a two-dimensional subspace spanned by m = ±1, a beam electron in a transmission electron microscope (TEM) can be considered as a quantum bit (qubit) freely propagating in the column. A combination of electron optical cylinder lenses can serve as a universal device to manipulate such qubits at the experimenter’s discretion. We set up a TEM probe forming lens system as a quantum gate and demonstrate its action numerically and experimentally. High-end TEMs with aberration correctors are a promising platform for such experiments, opening the way to study quantum logic gates in the electron microscope.
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Research facilities:
Universitäre Service-Einrichtung für Transmissionselektronenmikroskopie
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Project title:
Ein Vortexgenerator hoher Brillanz im Elektronenmikrosop: P 29687-N36 (FWF Fonds zur Förderung der wissenschaftlichen Forschung (FWF)) Orbitalkartierung an Grenzflächen: I 4309-N36 (FWF Fonds zur Förderung der wissenschaftlichen Forschung (FWF))
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Project (external):
European Union’s Horizon 2020 European Union’s Horizon 2020 Deutsche Forschungsgemeinschaft (DFG)
