Photo-assisted spin transport in double quantum dots with spin–orbit interaction
In: JPhys Materials, Jg. 6 (2023), Heft 3, S. 034004-34004
Online
academicJournal
Zugriff:
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.
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Photo-assisted spin transport in double quantum dots with spin–orbit interaction
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Autor/in / Beteiligte Person: | Fernández-Fernández, David ; Picó-Cortés, Jordi ; Sergio Vela Liñán ; Platero, Gloria |
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Zeitschrift: | JPhys Materials, Jg. 6 (2023), Heft 3, S. 034004-34004 |
Veröffentlichung: | IOP Publishing, 2023 |
Medientyp: | academicJournal |
ISSN: | 2515-7639 (print) |
DOI: | 10.1088/2515-7639/acd1b7 |
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