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Optical Switching Based on the Conditional Faraday Effect With Electron Spins in Quantum Dots

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4 Author(s)
Amy V. Thompson ; Dept. of Phys., Univ. of California, Santa Barbara, CA ; Hubert Seigneur ; Michael N. Leuenberger ; Winston V. Schoenfeld

We present the theoretical foundation of a novel concept for optical switching based on the conditional Faraday effect with electron spins in quantum dots (QDs). Calculations for light of wavelengths lambda = 1.3 mum and lambda = 1.55 mum show devices with active regions of a few hundred microns are possible. Case studies for both spherical and nonspherical QDs are considered, with calculations for the nonspherical case showing a 20% reduction in the required device length due to the lifting of the light and heavy hole band degeneracy.

Published in:

IEEE Journal of Quantum Electronics  (Volume:45 ,  Issue: 6 )