Löffler, S., Schachinger, T., Hartel, P., Lu, P.-H., Dunin-Borkowski, R., Obermair, M., Dries, M., Gerthsen, D., & Schattschneider, P. (2023). A quantum logic gate for free electrons. Quantum, 7, Article 1050. https://doi.org/10.22331/q-2023-07-11-1050
E057-02 - Fachbereich Universitäre Serviceeinrichtung für Transmissions- Elektronenmikroskopie E057 - Facilities und Zentren E138 - Institut für Festkörperphysik
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Journal:
Quantum
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ISSN:
2521-327X
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Date (published):
11-Jul-2023
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Number of Pages:
9
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Publisher:
Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
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Peer reviewed:
Yes
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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 quadrupole 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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Research Areas:
Quantum Modeling and Simulation: 50% Design and Engineering of Quantum Systems: 50%
CC BY 4.0
