期刊
OPTICA
卷 3, 期 8, 页码 882-886出版社
OPTICAL SOC AMER
DOI: 10.1364/OPTICA.3.000882
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资金
- Royal Society
- Engineering and Physical Sciences Research Council (EPSRC) [EP/I023186/1, EP/K015338/1, EP/L015110/1]
- European Research Council (ERC) [307392]
- Spanish Government [TEC2014-53727-C2-1-R]
- Comunidad Valenciana Government [PROMETEOII/2014/059]
- University of Valencia [UV-INV-PREDOC13-110538]
- EPSRC [EP/M013472/1, EP/K015338/1, EP/I023186/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [1405697, EP/M013472/1, EP/I023186/1, EP/K015338/1] Funding Source: researchfish
Coherent quantum control and resonance fluorescence of few-level quantum systems is integral for quantum technologies. Here we perform resonance and near-resonance excitation of three-dimensionally confined excitons in monolayer WSe2 to reveal near-ideal single-photon fluorescence with count rates up to 3 MHz. Using high-resolution photoluminescence excitation spectroscopy of the localized excitons, we uncover a weakly fluorescent exciton state similar to 5 meV blue shifted from the ground-state exciton, providing important information to unravel the precise nature of quantum states. Successful demonstration of resonance fluorescence paves the way to probe the localized exciton coherence in two-dimensional semiconductors.
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