Accession Number : ADA593656


Title :   Optical Signatures of Coupled Quantum Dots


Descriptive Note : Journal article


Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC


Personal Author(s) : Stinaff, E A ; Scheibner, M ; Bracker, A S ; Ponomarev, I V ; Korenev, V L ; Ware, M E ; Doty, M F ; Reinecke, T L ; Gammon, D


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a593656.pdf


Report Date : 03 Feb 2006


Pagination or Media Count : 5


Abstract : An asymmetric pair of coupled InAs quantum dots is tuned into resonance by applying an electric field so that a single hole forms a coherent molecular wave function. The optical spectrum shows a rich pattern of level anticrossings and crossings that can be understood as a superposition of charge and spin configurations of the two dots. Coulomb interactions shift the molecular resonance of the optically excited state (charged exciton) with respect to the ground state (single charge), enabling light-induced coupling of the quantum dots. This result demonstrates the possibility of optically coupling quantum dots for application in quantum information processing.


Descriptors :   *OPTICAL SIGNATURES , *QUANTUM DOTS , COUPLING(INTERACTION) , ELECTRIC FIELDS , EXCITONS , GROUND STATE , HOLES(ELECTRON DEFICIENCIES) , INDIUM ARSENIDES , RESONANCE , WAVE FUNCTIONS


Subject Categories : Optical Detection and Detectors
      Quantum Theory and Relativity


Distribution Statement : APPROVED FOR PUBLIC RELEASE