Biolatti, E., D’Amico, I., Zanardi, P. and Rossi, F. (2002) Electro-optical properties of semiconductor quauntums dots: Application to quantum information processing. Physical Review B, 65 (7). 075306-23 PAGES. ISSN 1550-235X
A detailed analysis of the electro-optical response of single as well as coupled semiconductor quantum dots is presented. This is based on a realistic—i.e., fully tridimensional—description of Coulomb-correlated few-electron states, obtained via a direct-diagonalization approach. More specifically, we investigate the combined effect of static electric fields and ultrafast sequences of multicolor laser pulses in the few-carrier, i.e., low-excitation regime. In particular, we show how the presence of a properly tailored static field may give rise to significant electron-hole charge separation; these field-induced dipoles, in turn, may introduce relevant exciton-exciton couplings, which are found to induce significant—both intradot and interdot—biexcitonic splittings. We finally show that such few-exciton systems constitute an ideal semiconductor-based hardware for an all optical implementation of quantum information processing.
|Institution:||The University of York|
|Academic Units:||The University of York > Physics (York)|
|Depositing User:||York RAE Import|
|Date Deposited:||26 Feb 2009 10:00|
|Last Modified:||26 Feb 2009 10:00|
|Publisher:||The American Physical Society.|