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Probing Nonlinear Interactions of Dipolar Interlayer Excitons in MoSe/WSe Heterobilayers
Sai Shradha, Luc F. Oswald, Md Tarik Hossain +10
Interlayer excitons in transition-metal dichalcogenide heterobilayers possess intrinsic out-of-plane dipole moments, providing a platform for investigating exciton-exciton interact…
Impact of charge transfer excitons on unidirectional exciton transport in lateral TMD heterostructures
Roberto Rosati, Sai Shradha, Julian Picker +3
Lateral heterostructures built of monolayers of transition metal dichalcogenides (TMDs) are characterized by a thin 1D interface exhibiting a large energy offset. Recently, the for…
Optical detection of long electron spin transport lengths in a monolayer semiconductor
Lei Ren, Laurent Lombez, Cedric Robert +8
Using a spatially-resolved optical pump-probe experiment, we measure the lateral transport of spin/valley polarized electrons over very long distances (tens of micrometers) in a si…
Intrinsic exciton states mixing and non-linear optical properties in transition metal dichalcogenide monolayers
M. M. Glazov, L. E. Golub, G. Wang +3
Optical properties of transition metal dichalcogenides monolayers are controlled by the Wannier-Mott excitons forming a series of , , ,... hydrogen-like states. We deve…
Hyperfine coupling of hole and nuclear spins in symmetric GaAs quantum dots
M. Vidal, M. V. Durnev, L. Bouet +10
In self assembled III-V semiconductor quantum dots, valence holes have longer spin coherence times than the conduction electrons, due to their weaker coupling to nuclear spin bath…
Charge tuning in [111] grown GaAs droplet quantum dots
L. Bouet, M. Vidal, T. Mano +10
We demonstrate charge tuning in strain free GaAs/AlGaAs quantum dots (QDs) grown by droplet epitaxy on a GaAs(111)A substrate. Application of a bias voltage allows the controlled c…
Vanishing fine structure splittings in telecom wavelength quantum dots grown on (111)A surfaces by droplet epitaxy
X. Liu, N. Ha, H. Nakajima +7
The emission cascade of a single quantum dot is a promising source of entangled photons. A prerequisite for this source is the use of a symmetric dot analogous to an atom in a vacu…
Nuclear magnetization in gallium arsenide quantum dots at zero magnetic field
G. Sallen, S. Kunz, T. Amand +8
Optical and electrical control of the nuclear spin system allows enhancing the sensitivity of NMR applications and spin-based information storage and processing. Dynamic nuclear po…
Magnetic field induced valence band mixing in [111] grown semiconductor quantum dots
M. V. Durnev, M. M. Glazov, E. L. Ivchenko +11
We present a microscopic theory of the magnetic field induced mixing of heavy-hole states +/- 3/2 in GaAs droplet dots grown on (111)A substrates. The proposed theoretical model ta…