Optical Processes in High-Q Semiconductor Microcavities

Abstract

This final progress report summarizes research efforts in two areas: cavity QED of quantum dots and electromagnetically induced transparency (EIT) in GaAs quantum wells. Cavity QED studies are based on the development of a composite nanocrystal-microsphere system, in which CdSe/ZnS core/shell nanocrystals couple to whispering gallery modes (WGMs) in a fused silica microsphere. The composite microcavity system can feature a Q-factor as high as 108 and a nanocrystal decoherence rate as small as 3 microneV (0.75 GHz), indicating that the composite system can in principle reach the strong coupling regime of cavity QED. EIT studies have exploited the use of Coulomb interactions between excitons to induce and manipulate exciton spin coherence and biexciton coherence. These studies have led to the first experimental demonstration of EIT in inter-band optical transitions in semiconductors in A-type, cascaded, and V-type three-level systems.

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Document Details

Document Type
Technical Report
Publication Date
Mar 22, 2004
Accession Number
ADA422647

Entities

People

  • Hailin Wang

Organizations

  • University of Oregon

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption Spectra
  • Circular Polarization
  • Electronics
  • Energy Bands
  • Information Processing
  • Laser Science
  • Nanocrystals
  • Nanotechnology
  • Optical Materials
  • Q Factor
  • Quantum Dots
  • Quantum Electronics
  • Quantum Information
  • Quantum Wells
  • Scattering
  • Scientists
  • Semiconductors

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Microelectronics
  • Quantum Computing
  • Quantum Science - Quantum Dots