Research output: Contribution to journal › Article › peer-review
Real-space collapse of a polariton condensate. / Dominici, L.; Petrov, M.; Matuszewski, M.; Ballarini, D.; De Giorgi, M.; Colas, D.; Cancellieri, E.; Silva Fernández, B.; Bramati, A.; Gigli, G.; Kavokin, A.; Laussy, F.; Sanvitto, D.
In: Nature Communications, Vol. 6, 2015, p. 8993.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Real-space collapse of a polariton condensate
AU - Dominici, L.
AU - Petrov, M.
AU - Matuszewski, M.
AU - Ballarini, D.
AU - De Giorgi, M.
AU - Colas, D.
AU - Cancellieri, E.
AU - Silva Fernández, B.
AU - Bramati, A.
AU - Gigli, G.
AU - Kavokin, A.
AU - Laussy, F.
AU - Sanvitto, D.
PY - 2015
Y1 - 2015
N2 - 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.
AB - 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.
U2 - 10.1038/ncomms9993
DO - 10.1038/ncomms9993
M3 - Article
VL - 6
SP - 8993
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
ER -
ID: 3978764