Vorträge und Posterpräsentationen (mit Tagungsband-Eintrag):
M. Ballicchia, M. Nedjalkov, J. Weinbub:
"Wigner Dynamics of Electron Quantum Superposition States in a Confined and Opened Quantum Dot";
Vortrag: 22nd IEEE International Conference on Nanotechnology,
Palma de Mallorca, Sapin;
04.07.2022
- 08.07.2022; in: "2022 IEEE 22nd International Conference on Nanotechnology (NANO)",
(2022),
S. 565
- 568.
Kurzfassung englisch:
Wigner function approaches provide a unique ability to investigate the dynamics of electron quantum superposition states. Such states are essential to many solid-state nanotechnologies, e.g., coherent single-electron sources. Here, we study the coherent dynamics of an electron captured by a quantum dot using one-dimensional Wigner quantum transport simulations, revealing the manifesting oscillations in the probability density. We verify our solution with a Schrödinger solution to establish a frame of reference. In addition, we study the electron ejection process from the quantum dot into a quantum channel. The time-dependent Wigner solution provides us with the ability to analyze the quantum evolution in terms of phase space and concepts of classical mechanics. Our results show a clear correlation between barrier ejection timing and shape of the channel-injected, superposed states.
Schlagworte:
Wigner Dynamics, Quantum Dot, Electron Superposition State
"Offizielle" elektronische Version der Publikation (entsprechend ihrem Digital Object Identifier - DOI)
http://dx.doi.org/10.1109/NANO54668.2022.9928753
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.