Erlangen 2022 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 16: Quantum Effects I
Q 16.1: Talk
Tuesday, March 15, 2022, 10:30–10:45, Q-H13
A Quantum Klystron - Controlling Quantum Systems with Modulated Electron Beams — •Dennis Rätzel1, Daniel Hartley2, Osip Schwartz3, and Philipp Haslinger2 — 1Institut für Physik, Humboldt-Universität zu Berlin, Newtonstraße 15, 12489 Berlin, Germany — 2Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien, Stadionallee 2, 1020 Vienna, Austria — 3Dept. of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, Israel
Coherent control of quantum transitions - indispensable in quantum technology - generally relies on the interaction of quantum systems with electromagnetic radiation. Here, we theoretically demonstrate that the non-radiative electromagnetic near-field of a temporally modulated free-space electron beam can be utilized for coherent control of quantum systems. We show that such manipulation can be performed with only classical control over the electron beam itself, and is readily realizable with current technology. This approach may provide a pathway towards spectrally selective quantum control with nano-scale spatial resolution, harnessing the small de Broglie wavelength of electrons.