https://doi.org/10.1140/epjs/s11734-023-00977-4
Regular Article
Interferometry of multi-level systems: rate-equation approach for a charge qu
it
1
B. Verkin Institute for Low Temperature Physics and Engineering, 61103, Kharkiv, Ukraine
2
Theoretical Quantum Physics Laboratory, Cluster for Pioneering Research, RIKEN, 351-0198, Wakoshi, Saitama, Japan
Received:
10
April
2023
Accepted:
23
August
2023
Published online:
21
September
2023
We theoretically describe a driven two-electron four-level double-quantum dot (DQD) tunnel coupled to a fermionic sea using the rate-equation formalism. This approach allows to find occupation probabilities of each DQD energy level in a relatively simple way, compared to other methods. Calculated dependencies are compared with the experimental results. The system under study is irradiated by a strong driving signal, and as a result, one can observe Landau–Zener–Stückelberg–Majorana (LZSM) interferometry patterns which are successfully described by the considered formalism. The system operation regime depends on the amplitude of the excitation signal and the energy detuning, so one can transfer the system to the necessary quantum state in the most efficient way by setting these parameters. Obtained results give insights about initializing, characterizing, and controlling the quantum system states.
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© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
