Polarization states of charged excitons in coupled InAs/GaAs quantum dot molecules

ORAL

Abstract

The polarization state of charged excitons in coupled InAs/GaAs dots can reveal useful information about the spin state of its charge carriers. In this study, we examine the complete polarization state through Stokes parameter measurements to relate the polarization parameters of the luminescence to the spin configurations of the various charged excitons they originate from. We demonstrate that this method is a useful tool to identify and possibly create spin states for quantum computation applications.

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Authors

  • Ramana Thota

    • Department of Physics and Astronomy, and Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701-2979, USA

  • Swati Ramanathan

    • Department of Physics and Astronomy, and Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701-2979, USA

  • Kushal Wijesundara

    • Department of Physics and Astronomy, and Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701-2979, USA

  • Eric Stinaff

    • Department of Physics and Astronomy, and Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701-2979, USA

  • Allan Bracker

    • Naval Research Laboratory, Washington, DC 20375, USA

  • Dan Gammon

    • Naval Research Laboratory, Washington, DC 20375, USA