Figure 1: A diagram of the scheme to obtain a strain-induced quantum emitter.
From: Deterministic strain-induced arrays of quantum emitters in a two-dimensional semiconductor
(a) Atomically thin WSe2 is deformed by a nanopillar to achieve a point-like elastic strain perturbation. (b) The strain locally modulates the WSe2 band-gap. Superimposed on this artificial modulation of the exciton energy are randomly distributed localized excitons. Optically created excitons efficiently funnel to an individual strain tuned localized exciton trap at the nanopillar centre resulting in a single highly efficient quantum emitter.
