| Download | - View final version: Electrically tunable effective g-factor of a single hole in a lateral GaAs/AlGaAs quantum dot (PDF, 3.3 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1038/s42005-019-0262-1 |
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| Author | Search for: Studenikin, Sergei1; Search for: Korkusinski, Marek1; Search for: Takahashi, Motoi1; Search for: Ducatel, Jordan1; Search for: Padawer-Blatt, Aviv1; Search for: Bogan, Alex1; Search for: Austing, D. Guy1; Search for: Gaudreau, Louis1; Search for: Zawadzki, Piotr1; Search for: Sachrajda, Andrew1; Search for: Hirayama, Yoshiro; Search for: Tracy, Lisa; Search for: Reno, John; Search for: Hargett, Terry |
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| Affiliation | - National Research Council of Canada. Security and Disruptive Technologies
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| Format | Text, Article |
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| Subject | electronic and spintronic devices; quantum information; qubits |
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| Abstract | Electrical tunability of the g-factor of a confined spin is a long-time goal of the spin qubit field. Here we utilize the electric dipole spin resonance (EDSR) to demonstrate it in a gated GaAs double-dot device confining a hole. This tunability is a consequence of the strong spin-orbit interaction (SOI) in the GaAs valence band. The SOI enables a spin-flip interdot tunneling, which, in combination with the simple spin-conserving charge transport leads to the formation of tunable hybrid spin-orbit molecular states. EDSR is used to demonstrate that the gap separating the two lowest energy states changes its character from a charge-like to a spin-like excitation as a function of interdot detuning or magnetic field. In the spin-like regime, the gap can be characterized by the effective g-factor, which differs from the bulk value owing to spin-charge hybridization, and can be tuned smoothly and sensitively by gate voltages. |
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| Publication date | 2020-01 |
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| Publisher | Nature Research |
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| Licence | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 8b1e3a75-96c5-4092-89d1-fc4622d85218 |
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| Record created | 2020-11-24 |
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| Record modified | 2021-02-09 |
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