On-demand electrical control of spin qubits.
Journal
Nature nanotechnology
ISSN: 1748-3395
Titre abrégé: Nat Nanotechnol
Pays: England
ID NLM: 101283273
Informations de publication
Date de publication:
Feb 2023
Feb 2023
Historique:
received:
10
04
2022
accepted:
24
10
2022
pubmed:
13
1
2023
medline:
13
1
2023
entrez:
12
1
2023
Statut:
ppublish
Résumé
Once called a 'classically non-describable two-valuedness' by Pauli, the electron spin forms a qubit that is naturally robust to electric fluctuations. Paradoxically, a common control strategy is the integration of micromagnets to enhance the coupling between spins and electric fields, which, in turn, hampers noise immunity and adds architectural complexity. Here we exploit a switchable interaction between spins and orbital motion of electrons in silicon quantum dots, without a micromagnet. The weak effects of relativistic spin-orbit interaction in silicon are enhanced, leading to a speed up in Rabi frequency by a factor of up to 650 by controlling the energy quantization of electrons in the nanostructure. Fast electrical control is demonstrated in multiple devices and electronic configurations. Using the electrical drive, we achieve a coherence time T
Identifiants
pubmed: 36635331
doi: 10.1038/s41565-022-01280-4
pii: 10.1038/s41565-022-01280-4
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
131-136Informations de copyright
© 2023. The Author(s), under exclusive licence to Springer Nature Limited.
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