Universal phase shift and nonexponential decay of driven single-spin oscillations.

We study, both theoretically and experimentally, driven Rabi oscillations of a single electron spin coupled to a nuclear-spin bath. Because of the long correlation time of the bath, two unusual features are observed in the oscillations. The decay follows a power law, and the oscillations are shifted in phase by a universal value of approximately pi/4. These properties are well understood from a theoretical expression that we derive here in the static limit for the nuclear bath. This improved understanding of the coupled electron-nuclear system is important for future experiments using the electron spin as a qubit.

• Publication year

  2007

• Venue

  Physical Review Letters

• Publication date

  2007-03-24

• Fields of study

  Medicine, Physics

• Identifiers
  DOI 10.1103/PhysRevLett.99.106803arXiv cond-mat/0703640PMID 17930403
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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