Large-scale quantum-emitter arrays in atomically thin semiconductors

• DOI: 10.1038/ncomms15093
• Publication Date: 2017-05-22T09:09:20Z
• Authors: Carmen Palacios-B...; Dhiren M. Kara; Alejandro R.-P. M...; Matteo Barbone; Pawel Latawiec; Duhee Yoon; Anna K. Ott; Marko Loncar; Andrea C. Ferrari; Mete Atatüre
• Keywords: Tungsten diselenide; Nanopillar

The flourishing field of two-dimensional (2D) nanophotonics has generated much excitement in the quantum technologies community after identification emitters (QEs) layered materials (LMs). LMs offer many advantages as platforms for circuits, such integration within hybrid technologies, valley degree freedom and strong spin-orbit coupling. QEs LMs, however, suffer from uncontrolled occurrences, added to uncertainty over their origin, which been linked defects strain gradients. Here, we report a scalable method create arrays single-photon emitting tungsten diselenide (WSe2) disulphide (WS2) using nanopatterned silica substrate. We obtain devices with QE numbers range hundreds, limited only by flake size, yield approaching unity. overall quality these deterministic surpasses that randomly appearing counterparts, spectral wanderings around 0.1 meV, an order magnitude lower than previous reports. Our technique solves scalability challenge LM-based photonic devices.