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Spin relaxation in semiconductor quantum rings and dots-a comparative study

Publiceringsår: 2011
Språk: Engelska
Publikation/Tidskrift/Serie: Journal of Physics: Condensed Matter1990-01-01+01:00
Volym: 23
Nummer: 11
Dokumenttyp: Artikel i tidskrift
Förlag: IOP Publishing


We calculate spin relaxation times due to spin-orbit-mediated electron-phonon interactions for experimentally accessible semiconductor quantum ring and dot architectures. We elucidate the differences between the two systems due to different confinement. The estimated relaxation times (at B = 1 T) are in the range between a few milliseconds to a few seconds. This high stability of spin in a quantum ring allows us to test it as a spin qubit. A brief discussion of quantum state manipulations with such a qubit is presented.


  • Natural Sciences
  • Physical Sciences


  • ISSN: 1361-648X

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