All-optical single-electron read-out devices based on GaN quantum dots

D’Amico, Irene; Fossi, Fausto
December 2002
Applied Physics Letters;12/30/2002, Vol. 81 Issue 27, p5213
Academic Journal
We study few-particle interactions in GaN-coupled quantum dots and discuss how the built-in field characteristic of these structures strongly reinforce dipole-dipole and dipole-monopole interactions. We introduce a semi-analytical model that allows for a rapid and easy estimate of the magnitude of few-particle interactions and whose predictions are closer than 10% to "exact" results. We apply our study to the design of an all-optical read-out device that exploits long-range dipolemonopole interactions and may be also used to monitor the charge status of a quantum dot system.


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