http://www.cnr.it/ontology/cnr/individuo/prodotto/ID179608
Observation of Long-Lived Polariton States in Semiconductor Microcavities across the Parametric Threshold (Articolo in rivista)
- Type
- Label
- Observation of Long-Lived Polariton States in Semiconductor Microcavities across the Parametric Threshold (Articolo in rivista) (literal)
- Anno
- 2009-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1103/PhysRevLett.102.056402 (literal)
- Alternative label
Ballarini, D; Sanvitto, D; Amo, A; Vina, L; Wouters, M; Carusotto, I; Lemaitre, A; Bloch, J (2009)
Observation of Long-Lived Polariton States in Semiconductor Microcavities across the Parametric Threshold
in Physical review letters (Print); The American Physical Society, College Park, MD 20740-3844 (Stati Uniti d'America)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Ballarini, D; Sanvitto, D; Amo, A; Vina, L; Wouters, M; Carusotto, I; Lemaitre, A; Bloch, J (literal)
- Pagina inizio
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://prl.aps.org/abstract/PRL/v102/i5/e056402 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Univ Autonoma Madrid, Dept Fis Mat, E-28049 Madrid, Spain
Ecole Polytech Fed Lausanne, Inst Theoret Phys, CH-1015 Lausanne, Switzerland
Univ Trent, Dipartimento Fis, I-38050 Trento, Italy
Univ Trent, INFM, CNR, BEC, I-38050 Trento, Italy
CNRS, LPN, F-91460 Marcoussis, France (literal)
- Titolo
- Observation of Long-Lived Polariton States in Semiconductor Microcavities across the Parametric Threshold (literal)
- Abstract
- The excitation spectrum around the pump-only stationary state of a polariton optical parametric oscillator in semiconductor microcavities is investigated by time-resolved photoluminescence. The response to a weak pulsed perturbation in the vicinity of the idler mode is directly related to the lifetime of the elementary excitations. A dramatic increase of the lifetime is observed for a pump intensity approaching and exceeding the optical parametric oscillator threshold. The observations can be explained in terms of a critical slowing down of the dynamics upon approaching the threshold and the following appearance of a soft Goldstone mode in the spectrum. (literal)
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