Symmetries and the Polarized Optical Spectra of Exciton Complexes in Quantum Dots

A systematic and simple theoretical approach is proposed to analyze true degeneracies and polarized decay patterns of exciton complexes in semiconductor quantum dots. The results provide reliable spectral signatures for efficient symmetry characterization, and predict original features for low C(2 nu) and high C(3 nu) symmetries. Excellent agreement with single quantum dot spectroscopy of real pyramidal InGaAs/AlGaAs quantum dots grown along [111] is demonstrated. The high sensitivity of biexciton quantum states to exact high symmetry can be turned into an efficient uninvasive postgrowth selection procedure for quantum entanglement applications.

Karlsson, FredrikLinköpings universitet,Halvledarmaterial,Tekniska högskolan(Swepub:liu)freka74 (author)
Oberli, D YEcole Polytech Fed Lausanne (author)
Pelucchi, EEcole Polytech Fed Lausanne (author)
Rudra, AEcole Polytech Fed Lausanne (author)
Holtz, Per-OlofLinköpings universitet,Halvledarmaterial,Tekniska högskolan(Swepub:liu)perho67 (author)
Kapon, EEcole Polytech Fed Lausanne (author)
Ecole Polytech Fed LausanneHalvledarmaterial (creator_code:org_t)

In:Physical Review Letters: American Physical Society107:12, s. 127403-0031-90071079-7114

By the author/editor: Dupertuis, M A; Karlsson, Fredri ...; Oberli, D Y; Pelucchi, E; Rudra, A; Holtz, Per-Olof; show more...; Kapon, E; show less...

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