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American Physical Society, Physical review B, 3(83), 2011

DOI: 10.1103/physrevb.83.035302

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Homogeneous broadening of theStoPtransition in InGaAs/GaAs quantum dots measured by infrared absorption imaging with nanoscale resolution

Journal article published in 2011 by S. Sauvage ORCID, A. Driss, F. Réveret, P. Boucaud, A. Dazzi, R. Prazeres, F. Glotin, J.-M. Ortéga, A. Miard, Y. Halioua, F. Raineri, I. Sagnes, A. Lemaître
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

Absorption of single InGaAs self-assembled quantum dots is spatially resolved in resonance with the S to P polaron transitions around λ=25 μm wavelength. We show that the spatial resolution down to 50 nm (λ/500) combined with the analysis of the absorption nanoscopy images provides a measurement of the homogeneous broadening at room temperature. The 2.5±1 meV measured S-P homogeneous broadening supports the calculated value accounting for acoustic phonon-induced decoherence.