We study the effect of valence band spin-orbit interaction on the exciton entanglement in vertically stacked quantum dots, using a multi-band k . p theory for holes. It is shown that the spin-orbit interaction reduces the exciton entanglement, establishing an intrinsic upper limit. For usual InGaAs nanostructures, however, this effect is generally small and does not pose a challenge for current attempts for the development of quantum information. (c) 2007 Elsevier B.V. All rights reserved.
Influence of valence band spin-orbit coupling on the entanglement of excitons in coupled quantum dots / J. I., Climente Plasencia; M., Korkusinski; Goldoni, Guido; P., Hawrylak. - In: PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES. - ISSN 1386-9477. - STAMPA. - 40:6(2008), pp. 1862-1864. [10.1016/j.physe.2007.08.042]
Influence of valence band spin-orbit coupling on the entanglement of excitons in coupled quantum dots
GOLDONI, Guido;
2008
Abstract
We study the effect of valence band spin-orbit interaction on the exciton entanglement in vertically stacked quantum dots, using a multi-band k . p theory for holes. It is shown that the spin-orbit interaction reduces the exciton entanglement, establishing an intrinsic upper limit. For usual InGaAs nanostructures, however, this effect is generally small and does not pose a challenge for current attempts for the development of quantum information. (c) 2007 Elsevier B.V. All rights reserved.
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