Researchers pin-point quantum light emission from 2D materials: Page 2 of 2

May 23, 2017 // By Julien Happich
Atomically thin layered transition metal dichalcogenides such as tungsten diselenide or tungsten disulphide have been reported to emit single photons, though from seemingly random locations which makes the study of the actual sources of emission rather difficult, not knowing precisely where to look for quantum light emitters.

They also found these QEs to emit with a greater spectral stability than their randomly occurring counterparts, typically with bright sub-nanometre linewidth emission peaks. Increasing the nanopillar height also reduced the spread in the number of peaks arising at each nanopillar location, which leads the paper to conclude that the QEs' optical emission could certainly be tuned by varying the shapes of the underlying nanostructures. In this case, the researchers extrapolate that MEMS or piezoelectric tuning could possibly allow dynamically tuned QEs for their integration into photonic structures.

They also predict that this novel way to create quantum emitters QE should not be restricted to a specific layered material but could be explored across many other 2D materials


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