Fernandez-Fernandez, David and Pico-Cortes, Jordi and Vela Linan, Sergio and Platero, Gloria (2023) Photo-assisted spin transport in double quantum dots with spin-orbit interaction. JOURNAL OF PHYSICS-MATERIALS, 6 (3): 034004. ISSN , 2515-7639
Full text not available from this repository. (Request a copy)Abstract
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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SINGLE-ELECTRON SPIN; COHERENT CONTROL; QUBITS; LOCALIZATION; LOGIC; CODE; GATE; semiconductor quantum dots; spin-orbit coupling; quantum transport; spin qubits; dark states; ac-driving dynamics and transport; electric dipole spin resonance |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 13 Mar 2024 15:22 |
| Last Modified: | 13 Mar 2024 15:22 |
| URI: | https://pred.uni-regensburg.de/id/eprint/60026 |
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