University of Cambridge > Talks.cam > Semiconductor Physics Group Seminars > Optical properties of exotic epitaxial nanostructures with respect to nanophotonic applications

Optical properties of exotic epitaxial nanostructures with respect to nanophotonic applications

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Optical properties of semiconductor nanostructures have recently been exploited for quantum-electrodynamics-based applications such as single photon sources, nanolasers, the ultimate single-dot thresholdless laser, or emitters of entangled photon pairs. For these purposes strongly anisotropic epitaxial quantum-dot-like structures (e.g. quantum dashes) can potentially be considered, mainly due to their easily tunable emission wavelength covering well the range of the 2nd and 3rd telecommunication windows.

I will present spectroscopic results on polarization of emission of such dots, the importance of exciton-phonon coupling, exciton fine structure splitting, exciton complexes, their binding energies and kinetics of emission, including the single photon emission at 1.3-1.55 µm detected via the exciton emission autocorrelation with the g(2)(0) values as low as 0.1.

This talk is part of the Semiconductor Physics Group Seminars series.

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