Spontaneous parametric scattering of microcavity polaritons in momentum space

Langbein, Wolfgang Werner ORCID: https://orcid.org/0000-0001-9786-1023 2004. Spontaneous parametric scattering of microcavity polaritons in momentum space. Physical Review B: Condensed Matter and Materials Physics 70 (20) , 205301. 10.1103/PhysRevB.70.205301

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Abstract

We measure the spontaneous parametric emission from a semiconductor microcavity after resonant pulsed coherent excitation. Resolving the emission in time and two-dimensional momentum space, the underlying scattering processes, which were theoretically treated by [ Ciuti et al. Phys. Rev. B 63 041303 (2001)], are validated. The predicted figure-8 shaped distribution of the final states of the parametric scattering is observed. We find a narrowing of the momentum distribution with time, which is a feature of memory effects in the scattering due to parametric correlation. Additionally, the influence of higher-order scattering and pump depletion are observed in the experiment.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	American Physical Society
ISSN:	1098-0121
Last Modified:	24 Oct 2022 11:39
URI:	https://orca.cardiff.ac.uk/id/eprint/48850

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