Unavoidable decoherence in semiconductor quantum dots
Unavoidable decoherence in semiconductor quantum dots
Jacak, L; Krasnyj, J; Jacak, W; Gonczarek, R; Machnikowski, P
2005-12-15 00:00:00
Phonon-induced unavoidable decoherence of orbital degrees of freedom in quantum dots is studied and the relevant time scales are estimated. Dephasing of excitons due to acoustic phonons and, in a polar medium, to optical phonons, including anharmonic effects and enhancement of the effective Fröhlich constant due to localization, is assessed for typical self-assembled quantum dots. Temporal inefficiency of Pauli blocking due to lattice inertia is predicted. For quantum dots placed in a diluted magnetic semiconductor medium a magnon-induced dephasing of a spin is also estimated in accordance with experimental results.
http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.pngPhysical Review BAmerican Physical Society (APS)http://www.deepdyve.com/lp/american-physical-society-aps/unavoidable-decoherence-in-semiconductor-quantum-dots-a4oLixh99E
Unavoidable decoherence in semiconductor quantum dots
Phonon-induced unavoidable decoherence of orbital degrees of freedom in quantum dots is studied and the relevant time scales are estimated. Dephasing of excitons due to acoustic phonons and, in a polar medium, to optical phonons, including anharmonic effects and enhancement of the effective Fröhlich constant due to localization, is assessed for typical self-assembled quantum dots. Temporal inefficiency of Pauli blocking due to lattice inertia is predicted. For quantum dots placed in a diluted magnetic semiconductor medium a magnon-induced dephasing of a spin is also estimated in accordance with experimental results.
Journal
Physical Review B
– American Physical Society (APS)
To get new article updates from a journal on your personalized homepage, please log in first, or sign up for a DeepDyve account if you don’t already have one.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.