http://www.cnr.it/ontology/cnr/individuo/prodotto/ID311403
Acoustic black hole in a stationary hydrodynamic flow of microcavity polaritons (Articolo in rivista)
- Type
- Label
- Acoustic black hole in a stationary hydrodynamic flow of microcavity polaritons (Articolo in rivista) (literal)
- Anno
- 2015-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1103/PhysRevLett.114.036402 (literal)
- Alternative label
Nguyen, Hai Son; Gerace, Dario; Carusotto, Iacopo; Sanvitto, Daniele; Galopin, Elisabeth; Lemaître, Aristide; Sagnes, Isabelle; Bloch, Jacqueline F.; Amo, Alberto (2015)
Acoustic black hole in a stationary hydrodynamic flow of microcavity polaritons
in Physical review letters (Print)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Nguyen, Hai Son; Gerace, Dario; Carusotto, Iacopo; Sanvitto, Daniele; Galopin, Elisabeth; Lemaître, Aristide; Sagnes, Isabelle; Bloch, Jacqueline F.; Amo, Alberto (literal)
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- LPN Laboratoire de Photonique et de Nanostructures; Universita degli Studi di Pavia; Universita degli Studi di Trento; Istituto Nanoscienze-CNR (literal)
- Titolo
- Acoustic black hole in a stationary hydrodynamic flow of microcavity polaritons (literal)
- Abstract
- We report an experimental study of superfluid hydrodynamic effects in a one-dimensional polariton fluid flowing along a laterally patterned semiconductor microcavity and hitting a micron-sized engineered defect. At high excitation power, superfluid propagation effects are observed in the polariton dynamics; in particular, a sharp acoustic horizon is formed at the defect position, separating regions of sub- and supersonic flow. Our experimental findings are quantitatively reproduced by theoretical calculations based on a generalized Gross-Pitaevskii equation. Promising perspectives to observe Hawking radiation via photon correlation measurements are illustrated. (literal)
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