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Frontiers in Optics

Slow and Fast Light Propagation in Semiconductor Quantum Dots

Qiguang Yang, Jaetae Seo, Bagher M. Tabibi, William W. Yu

Published Jan 1, 2009• 0 citations
Publisher

Abstract

The group velocity of a laser pulse in semiconductor quantum dots has been investigated and both slow and fast light propagation were observed experimentally. The phenomena will be explained directly in time-domain in this paper.
DOI
10.1364/fio.2009.fwb4

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A theoretical investigation on slow light propagation based on electromagnetically induced transparency in a three-level quantum-dot system is performed including non-Markovian effects and correlated dephasing reservoirs. It is demonstrated that the non-Markovian nature of the process is quite essential even for conventional dephasing typical of quantum dots leading to significant enhancement or inhibition of the group velocity slow-down factor as well as to the shifting and distortion of the transmission window. Furthermore, the correlation between dephasing reservoirs may also either enhance or inhibit non-Markovian effects.