CONTROL OF ELECTRON SPIN DECOHERENCE IN MESOSCOPIC NUCLEAR SPIN BATHS
Autor: | Ren-Bao Liu, L. J. Sham, Wang Yao |
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Rok vydání: | 2008 |
Předmět: |
Physics
Spin polarization Condensed matter physics Nuclear Theory Statistical and Nonlinear Physics Spin engineering Quantum entanglement Condensed Matter Physics Spin quantum number Quantum spin Hall effect Quantum mechanics Condensed Matter::Strongly Correlated Electrons Quantum spin liquid Nuclear Experiment Nitrogen-vacancy center Quantum dissipation |
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 |
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