CONTROL OF ELECTRON SPIN DECOHERENCE IN MESOSCOPIC NUCLEAR SPIN BATHS

Autor: Ren-Bao Liu, L. J. Sham, Wang Yao
Rok vydání: 2008
Předmět:
Zdroj: International Journal of Modern Physics B. 22:27-32
ISSN: 1793-6578
0217-9792
Popis: The electron spin decoherence by nuclear spins in semiconductor quantum dots is caused by quantum entanglement between the electron and the nuclei. The many-body dynamics problem of the interacting nuclear spins can be solved with the pair-correlation approximation which treats the nuclear spin flip-flops as mutually independent. The nuclear spin dynamics can be controlled by simply flipping the electron spin so that the electron is disentangled from the nuclei and hence its lost coherence is restored.
Databáze: OpenAIRE