期刊
NATURE COMMUNICATIONS
卷 6, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms9993
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资金
- MIUR project Beyond Nano
- ERC project POLAFLOW [308136]
- Quandyde project of ANR France
- EPSRC Programme grant on Hybrid Polaritonics [EP/M025330/1]
- Russian Ministry of Education and Science [11.G34.31.0067]
- SPbSU [11.38.277.2014]
- National Science Center [DEC-2011/01/D/ST3/00482]
- EPSRC [EP/J007544]
- ERC Advanced grant [EXCIPOL 320570]
- Engineering and Physical Sciences Research Council [EP/K007173/1, EP/M025330/1] Funding Source: researchfish
- EPSRC [EP/M025330/1, EP/K007173/1] Funding Source: UKRI
Microcavity polaritons are two-dimensional bosonic fluids with strong nonlinearities, composed of coupled photonic and electronic excitations. In their condensed form, they display quantum hydrodynamic features similar to atomic Bose-Einstein condensates, such as long-range coherence, superfluidity and quantized vorticity. Here we report the unique phenomenology that is observed when a pulse of light impacts the polariton vacuum: the fluid which is suddenly created does not splash but instead coheres into a very bright spot. The real-space collapse into a sharp peak is at odd with the repulsive interactions of polaritons and their positive mass, suggesting that an unconventional mechanism is at play. Our modelling devises a possible explanation in the self-trapping due to a local heating of the crystal lattice, that can be described as a collective polaron formed by a polariton condensate. These observations hint at the polariton fluid dynamics in conditions of extreme intensities and ultrafast times.
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