| DOI | Trouver le DOI : https://doi.org/10.1016/j.physe.2006.03.015 |
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| Auteur | Rechercher : Pioro-Ladrière, M.1; Rechercher : Sachrajda, A. S.1; Rechercher : Hawrylak, Pawel1; Rechercher : Abolfath, R.1; Rechercher : Lapointe, J.1; Rechercher : Zawadzki, Piotr1; Rechercher : Studenikin, Sergei1 |
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| Affiliation | - Conseil national de recherches Canada. Institut des sciences des microstructures du CNRC
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| Format | Texte, Article |
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| Résumé | Coupled few-electron dots with incorporated quantum point-contact charge detectors have been successfully fabricated and studied both experimentally and theoretically. In this paper we focus on charge detection measurements for the regimes most relevant to spin and charge qubit applications. We first characterize the degree of coherence of a single electron trapped in the double dot by measuring the average occupation of one of the dots at equilibrium. We find that the spin degree of freedom dramatically affects the charge states when a second electron is added to the system, resulting in novel charge transfer patterns. The patterns evolve as a function of tunnel coupling and magnetic field. A nonequilibrium occupation of ground and excited states as a possible origin of the observed phenomena is investigated theoretically through extensive numerical and CI calculations of 1–3 electron states for realistic confining potentials. |
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| Date de publication | 2006 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 12744824 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 86cf7f1c-3ce4-4744-830c-8357c3fd72f6 |
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| Enregistrement créé | 2009-10-27 |
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| Enregistrement modifié | 2023-06-23 |
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