dc.contributor.author | Mittag, Christopher | |
dc.contributor.author | Koski, Jonne V. | |
dc.contributor.author | Karalic, Matija | |
dc.contributor.author | Thomas, Candice | |
dc.contributor.author | Tuaz, Aymeric | |
dc.contributor.author | Hatke, Anthony T. | |
dc.contributor.author | Gardner, Geoffrey C. | |
dc.contributor.author | Manfra, Michael J. | |
dc.contributor.author | Danon, Jeroen | |
dc.contributor.author | Ihn, Thomas | |
dc.contributor.author | Ensslin, Klaus | |
dc.date.accessioned | 2023-01-16T12:12:32Z | |
dc.date.available | 2023-01-16T12:12:32Z | |
dc.date.created | 2021-02-11T09:15:06Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 2691-3399 | |
dc.identifier.uri | https://hdl.handle.net/11250/3043703 | |
dc.description.abstract | Most proof-of-principle experiments for spin qubits have been performed with GaAs-based quantum dots because of the excellent control they offer over tunneling barriers and the orbital and spin degrees of freedom. Here we present the first realization of high-quality single and double quantum dots hosted in an InAs two-dimensional electron gas, demonstrating accurate control down to the few-electron regime, where we observe a clear Kondo effect and singlet-triplet spin blockade. We measure an electronic g factor of 16 and a typical magnitude of the random hyperfine fields on the quantum dots of approximately 0.6mT. We estimate the spin-orbit length in the system to be approximately 5−10μm (which is almost 2 orders of magnitude longer than typically measured in InAs nanostructures), achieved by a very symmetric design of the quantum well. These favorable properties put the InAs two-dimensional electron gas on the map as a compelling host for studying fundamental aspects of spin qubits. Furthermore, having weak spin-orbit coupling in a material with a large Rashba coefficient potentially opens up avenues for engineering structures with spin-orbit coupling that can be controlled locally in space and/or time. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | American Physical Society | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Few-Electron Single and Double Quantum Dots in an InAs Two-Dimensional Electron Gas | en_US |
dc.title.alternative | Few-Electron Single and Double Quantum Dots in an InAs Two-Dimensional Electron Gas | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.volume | 2 | en_US |
dc.source.journal | PRX Quantum | en_US |
dc.source.issue | 1 | en_US |
dc.identifier.doi | 10.1103/PRXQuantum.2.010321 | |
dc.identifier.cristin | 1888727 | |
dc.relation.project | Norges forskningsråd: 274853 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |