Journal
SCIENCE ADVANCES
Volume 5, Issue 2, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.aat9618
Keywords
-
Categories
Funding
- European Research Council (ERC), under the project MIRAGE 20-15
- European Research Council (ERC), under the project H2020 [639402]
- Israel Science Foundation (ISF) [1433/15]
- European Research Council (ERC) [639402] Funding Source: European Research Council (ERC)
Ask authors/readers for more resources
Van der Waals (vdW) materials offer an exciting platform for strong light-matter interaction enabled by their polaritonic modes and the associated deep subwavelength light confinement. Semiconductor vdW materials such as WSe2 are of particular interest for photonic and quantum integrated technologies because they sustain visible-near-infrared (VIS-NIR) exciton-polariton (EP) modes at room temperature. Here, we develop a unique spatiotemporal imaging technique at the femtosecond-nanometric scale and observe the EP dynamics in WSe2 waveguides. Our method, based on a novel ultrafast broadband intrapulse pump-probe near-field imaging, allows direct visualization of EP formation and propagation in WSe2 showing, at room temperature, ultraslow EP with a group velocity of v(g) similar to 0.017c. Our imaging method paves the way for in situ ultrafast coherent control and extreme spatiotemporal imaging of condensed matter.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available