Engineering long spin coherence times of spin-orbit qubits in silicon.
Journal
Nature materials
ISSN: 1476-4660
Titre abrégé: Nat Mater
Pays: England
ID NLM: 101155473
Informations de publication
Date de publication:
Jan 2021
Jan 2021
Historique:
received:
09
08
2019
accepted:
18
06
2020
pubmed:
22
7
2020
medline:
22
7
2020
entrez:
22
7
2020
Statut:
ppublish
Résumé
Electron-spin qubits have long coherence times suitable for quantum technologies. Spin-orbit coupling promises to greatly improve spin qubit scalability and functionality, allowing qubit coupling via photons, phonons or mutual capacitances, and enabling the realization of engineered hybrid and topological quantum systems. However, despite much recent interest, results to date have yielded short coherence times (from 0.1 to 1 μs). Here we demonstrate ultra-long coherence times of 10 ms for holes where spin-orbit coupling yields quantized total angular momentum. We focus on holes bound to boron acceptors in bulk silicon 28, whose wavefunction symmetry can be controlled through crystal strain, allowing direct control over the longitudinal electric dipole that causes decoherence. The results rival the best electron-spin qubits and are 10
Identifiants
pubmed: 32690913
doi: 10.1038/s41563-020-0743-3
pii: 10.1038/s41563-020-0743-3
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
38-42Références
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