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Loss of coherence in cavity-polariton condensates: effect of disorder vs. exciton reservoir
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dc.contributor.author | Demenev, A. A. | |
dc.contributor.author | Grishina , Ya. V. | |
dc.contributor.author | Kulakovskii, V. D. | |
dc.contributor.author | Schneider, C. | |
dc.contributor.author | Höfling, Sven | |
dc.date.accessioned | 2016-10-26T14:30:13Z | |
dc.date.available | 2016-10-26T14:30:13Z | |
dc.date.issued | 2016-11-15 | |
dc.identifier | 246854254 | |
dc.identifier | 306c01c4-a091-4805-b542-269a4a28d691 | |
dc.identifier | 84994627686 | |
dc.identifier | 000386769400005 | |
dc.identifier.citation | Demenev , A A , Grishina , Y V , Kulakovskii , V D , Schneider , C & Höfling , S 2016 , ' Loss of coherence in cavity-polariton condensates: effect of disorder vs. exciton reservoir ' , Physical Review. B, Condensed matter and materials physics , vol. 94 , no. 19 , 195302 . https://doi.org/10.1103/PhysRevB.94.195302 | en |
dc.identifier.issn | 2469-9950 | |
dc.identifier.uri | https://hdl.handle.net/10023/9706 | |
dc.description | The work was supported by the Russian Science Foundation (Grant No. 14-12-01372) and the State of Bavaria. | en |
dc.description.abstract | Time evolution of long-range spatial coherence in a freely decaying cavity-polariton condensate excited resonantly in a high-Q GaAs microcavity (MC) is found to be qualitatively different from that in nonresonantly excited condensates. The first-order spatial correlation function g(1)(r1, r2) in response to resonant 1.5 ps pump pulses at normal incidence leaving the exciton reservoir empty is found to be nearly independent of the excitation density. g(1) exceeds 0.7 within the excited spot and decreases very slowly in the decaying and expanding condensate. It remains above 0.5 until the polariton blueshift α|ψ2| gets comparable to the characteristic amplitude of the disorder potential δELP . The disorder is found to reveal itself at α|ψ2| ≤ δELP in fast and short-range phase fluctuations as well as vortex formation. They lead to oscillations in g(1)(t), but have little effect on the overall coherence, which is well reproduced in the framework of the Gross-Pitaevskii equations. | |
dc.format.extent | 8 | |
dc.format.extent | 1162890 | |
dc.language.iso | eng | |
dc.relation.ispartof | Physical Review. B, Condensed matter and materials physics | en |
dc.subject | QC Physics | en |
dc.subject | T Technology | en |
dc.subject | NDAS | en |
dc.subject.lcc | QC | en |
dc.subject.lcc | T | en |
dc.title | Loss of coherence in cavity-polariton condensates: effect of disorder vs. exciton reservoir | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. Condensed Matter Physics | en |
dc.identifier.doi | 10.1103/PhysRevB.94.195302 | |
dc.description.status | Peer reviewed | en |
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