Accession Number:

ADA593656

Title:

Optical Signatures of Coupled Quantum Dots

Descriptive Note:

Journal article

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Report Date:

2006-02-03

Pagination or Media Count:

5.0

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.

Subject Categories:

  • Optical Detection and Detectors
  • Quantum Theory and Relativity

Distribution Statement:

APPROVED FOR PUBLIC RELEASE