| Autor: |
David Fernández-Fernández, Jordi Picó-Cortés, Sergio Vela Liñán, Gloria Platero |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
JPhys Materials, Vol 6, Iss 3, p 034004 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2515-7639 |
| DOI: |
10.1088/2515-7639/acd1b7 |
| Popis: |
We investigate the effect of spin–orbit interaction on the intra- and interdot particle dynamics of a double quantum dot (QD) under ac electric fields. The former is modeled as an effective ac magnetic field that produces electric-dipole spin resonance transitions, while the latter is introduced via spin-flip tunneling amplitudes. We observe the appearance of non-trivial spin-polarized dark states (DSs), arising from an ac-induced interference between photo-assisted spin-conserving and spin-flip tunneling processes. These DSs can be employed to precisely measure the spin–orbit coupling in QD systems. Furthermore, we show that the interplay between photo-assisted transitions and spin-flip tunneling enables the system to operate as a highly tunable spin filter. Finally, we investigate the operation of the system as a resonant flopping-mode qubit for arbitrary ac voltage amplitudes, allowing for high tunability and enhanced qubit control possibilities. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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