Interaction-driven transport of dark excitons in 2D semiconductors with phonon-mediated optical readout.

ABSTRACT: The growing field of quantum information technology requires propagation of information over long distances with efficient readout mechanisms. Excitonic quantum fluids have emerged as a powerful platform for this task due to their straightforward electro-optical conversion. In two-dimensional transition metal dichalcogenides, the coupling between spin and valley provides exciting opportunities for harnessing, manipulating, and storing bits of information. However, the large inhomogeneity of single layers cannot be overcome by the properties of bright excitons, hindering spin-valley transport. Nonetheless, the rich band structure supports dark excitonic states with strong binding energy and longer lifetime, ideally suited for long-range transport. Here we show that dark excitons can diffuse

SUBMITTER: Chand SB 

PROVIDER: S-EPMC10287636 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature