29Si nuclear spins as a resource for donor spin qubits in silicon

Gary Wolfowicz, Pierre André Mortemousque, Roland Guichard, Stephanie Simmons, Mike L.W. Thewalt, Kohei M. Itoh, John J.L. Morton

研究成果: Article査読

12 被引用数 (Scopus)

抄録

Nuclear spin registers in the vicinity of electron spins in solid state systems offer a powerful resource to address the challenge of scalability in quantum architectures. We investigate here the properties of 29Si nuclear spins surrounding donor atoms in silicon, and consider the use of such spins, combined with the donor nuclear spin, as a quantum register coupled to the donor electron spin. We find the coherence of the nearby 29Si nuclear spins is effectively protected by the presence of the donor electron spin, leading to coherence times in the second timescale - over two orders of magnitude greater than the coherence times in bulk silicon. We theoretically investigate the use of such a register for quantum error correction (QEC), including methods to protect nuclear spins from the ionisation/neutralisation of the donor, which is necessary for the re-initialisation of the ancillae qubits. This provides a route for multi-round QEC using donors in silicon.

本文言語English
論文番号023021
ジャーナルNew Journal of Physics
18
2
DOI
出版ステータスPublished - 2016 2 5

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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