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Indirect Excitons and Many-body Interactions in InGaAs Double Quantum Wells
Christopher L. Smallwood, Rachel Owen, Matthew W. Day +6
Spatially indirect excitons in semiconductor quantum wells are relevant to basic research and device applications because they exhibit enhanced tunability, delocalized wave functio…
The Excitation Ladder of Cavity Polaritons
Travis M. Autry, Gaël Nardin, Christopher L. Smallwood +6
Multidimensional coherent spectroscopy directly unravels multiply excited states that overlap in a linear spectrum. We report multidimensional coherent optical photocurrent spectro…
Microsecond Valley Lifetime of Defect-Bound Excitons in Monolayer WSe
Galan Moody, Kha Tran, Xiaobo Lu +6
In atomically thin two-dimensional semiconductors such as transition metal dichalcogenides (TMDs), controlling the density and type of defects promises to be an effective approach…
Moiré Excitons in Van der Waals Heterostructures
Kha Tran, Galan Moody, Fengcheng Wu +19
In van der Waals (vdW) heterostructures formed by stacking two monolayer semiconductors, lattice mismatch or rotational misalignment introduces an in-plane moiré superlattice. Whil…
Coherent Excitonic Coupling in an Asymmetric Double InGaAs Quantum Well Arises from Many-Body Effects
Gael Nardin, Galan Moody, Rohan Singh +4
We study an asymmetric double InGaAs quantum well using optical two-dimensional coherent spectroscopy. The collection of zero-quantum, one-quantum, and two-quantum two-dimensional…