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.
Protected solid-state qubits
Note: This paper is part of the APL Special Collection on Emerging Qubit Systems - Novel Materials, Encodings and Architectures.
Jeroen Danon, Anasua Chatterjee, András Gyenis, Ferdinand Kuemmeth; Protected solid-state qubits. Appl. Phys. Lett. 27 December 2021; 119 (26): 260502. https://doi.org/10.1063/5.0073945
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