Exciton storage in a nanoscale Aharonov-Bohm ring with electric field tuning.

  title={Exciton storage in a nanoscale Aharonov-Bohm ring with electric field tuning.},
  author={Andrea M. Fischer and Vivaldo L. Campo and Mikhail E Portnoi and Rudolf A. R{\"o}mer},
  journal={Physical review letters},
  volume={102 9},
We study analytically the optical properties of a simple model for an electron-hole pair on a ring subjected to perpendicular magnetic flux and in-plane electric field. We show how to tune this excitonic system from optically active to optically dark as a function of these external fields. Our results offer a simple mechanism for exciton storage and readout. 

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