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Properties of the signal mode in the polariton optical parametric oscillator regime
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA. Stockholm Univ, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden..
UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England..
UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England..
UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England.;Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England..
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2018 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 98, no 16, article id 165307Article in journal (Refereed) Published
Abstract [en]

Theoretical analyses of the polariton optical parametric oscillator (OPO) regime often rely on a mean-field approach based on the complex Gross-Pitaevskii equations in a three-mode approximation, where only three momentum states, the signal, pump, and idler, are assumed to be significantly occupied. This approximation, however, lacks a constraint to uniquely determine the signal and idler momenta. In contrast, multimode numerical simulations and experiments show a unique momentum structure for the OPO states. In this work we show that an estimate for the signal momentum chosen by the system can be found from a simple analysis of the pump-only configuration. We use this estimate to investigate how the chosen signal momentum depends on the properties of the drive.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2018. Vol. 98, no 16, article id 165307
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Physical Sciences
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URN: urn:nbn:se:kth:diva-238530DOI: 10.1103/PhysRevB.98.165307ISI: 000448165800004Scopus ID: 2-s2.0-85055771753OAI: oai:DiVA.org:kth-238530DiVA, id: diva2:1260994
Note

QC 20181106

Available from: 2018-11-06 Created: 2018-11-06 Last updated: 2019-03-18Bibliographically approved

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