Homogeneous broadening of the to transition in InGaAs/GaAs quantum dots measured by infrared absorption imaging with nanoscale resolution
Physical Review B—Condensed Matter and Materials Physics, 2011•APS
Absorption of single InGaAs self-assembled quantum dots is spatially resolved in resonance
with the S to P polaron transitions around λ= 25 μ m 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 SP homogeneous broadening supports the calculated value
accounting for acoustic phonon-induced decoherence.
with the S to P polaron transitions around λ= 25 μ m 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 SP homogeneous broadening supports the calculated value
accounting for acoustic phonon-induced decoherence.
Absorption of single InGaAs self-assembled quantum dots is spatially resolved in resonance with the to polaron transitions around wavelength. We show that the spatial resolution down to 50 nm () combined with the analysis of the absorption nanoscopy images provides a measurement of the homogeneous broadening at room temperature. The meV measured - homogeneous broadening supports the calculated value accounting for acoustic phonon-induced decoherence.
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