Spin detection at elevated temperatures using a driven double quantum dot

G. Giavaras; J. Wabnig; B. W. Lovett; J. H. Jefferson; G. A. D. Briggs

doi:10.1103/PhysRevB.82.085410

Spin detection at elevated temperatures using a driven double quantum dot

Mesoscale and Nanoscale Physics 2015-05-18 v1

Authors: G. Giavaras , J. Wabnig , B. W. Lovett , J. H. Jefferson , G. A. D. Briggs

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Abstract

We consider a double quantum dot in the Pauli blockade regime interacting with a nearby single spin. We show that under microwave irradiation the average electron occupations of the dots exhibit resonances that are sensitive to the state of the nearby spin. The system thus acts as a spin meter for the nearby spin. We investigate the conditions for a non-demolition read-out of the spin and find that the meter works at temperatures comparable to the dot charging energy and sensitivity is mainly limited by the intradot spin relaxation.

Keywords

spin-orbit coupling magnetic resonance quantum dots and electron transport

Cite

@article{arxiv.1004.1289,
  title  = {Spin detection at elevated temperatures using a driven double quantum dot},
  author = {G. Giavaras and J. Wabnig and B. W. Lovett and J. H. Jefferson and G. A. D. Briggs},
  journal= {arXiv preprint arXiv:1004.1289},
  year   = {2015}
}

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8 pages, 6 figures

Spin detection at elevated temperatures using a driven double quantum dot

Abstract

Keywords

Cite

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