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7 papers
Exciton Coherence in CsPbBr3 Nanocrystals is Bounded by Phonon-Mediated Bright-Triplet Relaxation
Tara Šverko, Annette J. Jones, Chantalle J. Krajewska +6
Scalable sources of indistinguishable single photons or entangled photon pairs are fundamental to many quantum photonic technologies. Colloidal lead halide perovskite nanocrystals…
Optical activity of chiral excitons
Peter C. Sercel, Matthew P. Hautzinger, Ruyi Song +2
Recent activity in the area of chiroptical phenomena has been focused on the connection between structural asymmetry, electron spin configuration and light matter interactions in c…
Double-Rashba materials for nanocrystals with bright ground-state excitons
Michael W. Swift, Peter C. Sercel, Alexander L. Efros +2
While nanoscale semiconductor crystallites provide versatile fluorescent materials for light-emitting devices, such nanocrystals suffer from the "dark exciton"$\unicode{x2014}$an o…
Lattice distortion inducing exciton splitting and coherent quantum beating in CsPbI3 perovskite quantum dots
Yaoyao Han, Wenfei Liang, Xuyang Lin +5
Anisotropic exchange-splitting in semiconductor quantum dots (QDs) results in bright-exciton fine-structure-splitting (FSS) important for quantum information processing. Direct mea…
Dark and Bright Excitons in Halide Perovskite Nanoplatelets
Moritz Gramlich, Michael W. Swift, Carola Lampe +5
Semiconductor nanoplatelets (NPLs), with their large exciton binding energy, narrow photoluminescence (PL), and absence of dielectric screening for photons emitted normal to the NP…
Circular dichroism in non-chiral metal halide perovskites
Peter C. Sercel, Zeev Valy Vardeny, Alexander L. Efros
We demonstrate theoretically that non-chiral perovskite layers can exhibit circular dichroism (CD) in the absence of a magnetic field and without chiral activation by chiral molecu…
Bright triplet excitons in lead halide perovskites
Michael A. Becker, Roman Vaxenburg, Georgian Nedelcu +13
Nanostructured semiconductors emit light from electronic states known as excitons[1]. According to Hund's rules[2], the lowest energy exciton in organic materials should be a poorl…