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Single-photon sources are important building blocks for quantum technology. Recently, non-classical light emitters have been found in the transition metal dichalcogenide WSe2 [1].
Single-photon sources are important building blocks for quantum technology. Recently, bright and stable single-photon emitters have been reported in the atomically thin semiconductor WSe2. However, the localized light sources appear at random positions at the edges of the material [1]. Here, we demonstrate the deterministic positioning of single-photon emitters in monolayer WSe2 on the nanoscale [2]...
We observe stable and narrowband single photon emission from localized quantum emitters in a WSe2 monolayer. Photoluminescence excitation spectroscopy reveals that the emission originates from single excitons trapped in a local potential well.
We reveal the ultrafast intervalley dynamics in monolayer WS2 with a spectrally-resolved ultrafast pump-probe experiment and a microscopic theory. We find strong intervalley Coulomb coupling in the atomically thin semiconductor.
We investigate photoluminescence emission and absorption of mechanically exfoliated mono- and few-layers of the transition metal dichalcogenides MoS2, MoSe2, and WSe2 and elucidate the nature of the layer-dependent phonon modes via high-resolution Raman spectroscopy.
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