@inproceedings{0be37e0beda04b20aa72c0799b81b14d,
title = "Observation of a long-lived polariton state in semiconductor microcavities",
abstract = "The spectrum of a polariton optical parametric oscillator (OPO) around the signal state is investigated by means of a novel experimental configuration, which allows for the observation of the imaginary part of the OPO elementary excitations. Using continuous-wave resonant excitation, around the inflection point of the lower polariton dispersion, with a pulsed-probe, resonant at the idler position, we obtain the long dynamics behavior around the signal state. This allows the study of the damping rate of the OPO's signal state as a function of pump intensity by means of time- and energy-resolved photoluminescence. At high pump intensities, the lifetime of the perturbed signal is observed to be orders of magnitude (nanoseconds) longer than the intrinsic cavity lifetime (picoseconds). These results are in agreement with calculations of the self-energy of the excitations around the signal state.",
keywords = "Goldstone modes, Microcavities, OPO",
author = "D. Ballarini and A. Amo and D. Sanvitto and Martin, \{M. D.\} and L. Vi{\~n}a and M. Wouters and I. Carusotto and A. Lemaitre and J. Bloch",
year = "2009",
month = dec,
day = "1",
doi = "10.1063/1.3295348",
language = "English",
isbn = "9780735407367",
series = "AIP Conference Proceedings",
pages = "165--166",
booktitle = "Physics of Semiconductors - 29th International Conference, ICPS 29",
note = "29th International Conference on Physics of Semiconductors, ICPS 29 ; Conference date: 27-07-2008 Through 01-08-2008",
}