Protected solid-state qubits

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The implementation of large-scale fault-tolerant quantum computers calls for the integration of millions of physical qubits with very low error rates. This outstanding engineering challenge may benefit from emerging qubits that are protected from dominating noise sources in the qubits' environment. In addition to different noise reduction techniques, protective approaches typically encode qubits in global or local decoherence-free subspaces, or in dynamical sweet spots of driven systems. We exemplify such protected qubits by reviewing the state-of-art in protected solid-state qubits based on semiconductors, superconductors, and hybrid devices.

Original languageEnglish
Article number260502
JournalApplied Physics Letters
Issue number26
Number of pages7
Publication statusPublished - 27 Dec 2021

Bibliographical note

Funding Information:
J.D. acknowledges support via FRIPRO—Project No. 274853, which is funded by the Research Council of Norway (RCN).

Publisher Copyright:
© 2021 Author(s).

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