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Spin-orbit-induced strong coupling of a single spin to a nanomechanical resonator

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2012

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Rudner, Mark
Flensberg, Karsten

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http://nbn-resolving.de/urn:nbn:de:bsz:352-227401
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https://doi.org/10.1103/PhysRevLett.108.206811
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Physical Review Letters. 2012, 108(20). ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.108.206811

Zusammenfassung

We theoretically investigate the deflection-induced coupling of an electron spin to vibrational motion due to spin-orbit coupling in suspended carbon nanotube quantum dots. Our estimates indicate that, with current capabilities, a quantum dot with an odd number of electrons can serve as a realization of the Jaynes-Cummings model of quantum electrodynamics in the strong-coupling regime. A quantized flexural mode of the suspended tube plays the role of the optical mode and we identify two distinct two-level subspaces, at small and large magnetic field, which can be used as qubits in this setup. The strong intrinsic spin-mechanical coupling allows for detection, as well as manipulation of the spin qubit, and may yield enhanced performance of nanotubes in sensing applications.

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ISO 690PÁLYI, András, Philipp STRUCK, Mark RUDNER, Karsten FLENSBERG, Guido BURKARD, 2012. Spin-orbit-induced strong coupling of a single spin to a nanomechanical resonator. In: Physical Review Letters. 2012, 108(20). ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.108.206811
BibTex
@article{Palyi2012Spino-22740,
  year={2012},
  doi={10.1103/PhysRevLett.108.206811},
  title={Spin-orbit-induced strong coupling of a single spin to a nanomechanical resonator},
  number={20},
  volume={108},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={Pályi, András and Struck, Philipp and Rudner, Mark and Flensberg, Karsten and Burkard, Guido}
}
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