Flopping-mode electric dipole spin resonance

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2020
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Croot, Xanthe
Mi, Xiao
Putz, Stefan
Borjans, Felix
Petta, Jason R.
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Physical Review Research. American Physical Society (APS). 2020, 2(1), 012006. eISSN 2643-1564. Available under: doi: 10.1103/PhysRevResearch.2.012006
Zusammenfassung

Traditional approaches to controlling single spins in quantum dots require the generation of large electromagnetic fields to drive many Rabi oscillations within the spin coherence time. We demonstrate "flopping-mode" electric dipole spin resonance, where an electron is electrically driven in a Si/SiGe double quantum dot in the presence of a large magnetic field gradient. At zero detuning, charge delocalization across the double quantum dot enhances coupling to the drive field and enables low power electric dipole spin resonance. Through dispersive measurements of the single electron spin state, we demonstrate a nearly three order of magnitude improvement in driving efficiency using flopping-mode resonance, which should facilitate low power spin control in quantum dot arrays.

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ISO 690CROOT, Xanthe, Xiao MI, Stefan PUTZ, Mónica BENITO, Felix BORJANS, Guido BURKARD, Jason R. PETTA, 2020. Flopping-mode electric dipole spin resonance. In: Physical Review Research. American Physical Society (APS). 2020, 2(1), 012006. eISSN 2643-1564. Available under: doi: 10.1103/PhysRevResearch.2.012006
BibTex
@article{Croot2020Flopp-51062,
  year={2020},
  doi={10.1103/PhysRevResearch.2.012006},
  title={Flopping-mode electric dipole spin resonance},
  number={1},
  volume={2},
  journal={Physical Review Research},
  author={Croot, Xanthe and Mi, Xiao and Putz, Stefan and Benito, Mónica and Borjans, Felix and Burkard, Guido and Petta, Jason R.},
  note={Article Number: 012006}
}
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