Fermi-edge superfluorescence from a quantum-degenerate electron-hole gas

dc.citation.journalTitleScientific Reportsen_US
dc.citation.volumeNumber3en_US
dc.contributor.authorKim, Ji-Heeen_US
dc.contributor.authorNoe, G. Timothy IIen_US
dc.contributor.authorMcGill, Stephen A.en_US
dc.contributor.authorWang, Yongruien_US
dc.contributor.authorWojcik, Aleksander K.en_US
dc.contributor.authorBelyanin, Alexey A.en_US
dc.contributor.authorKono, Junichiroen_US
dc.date.accessioned2013-12-19T22:11:05Zen_US
dc.date.available2013-12-19T22:11:05Zen_US
dc.date.issued2013en_US
dc.description.abstractNonequilibrium can be a source of order. This rather counterintuitive statement has been proven to be true through a variety of fluctuation-driven, self-organization behaviors exhibited by out-of-equilibrium, many-body systems in nature (physical, chemical, and biological), resulting in the spontaneous appearance of macroscopic coherence. Here, we report on the observation of spontaneous bursts of coherent radiation from a quantum-degenerate gas of nonequilibrium electron-hole pairs in semiconductor quantum wells. Unlike typical spontaneous emission from semiconductors, which occurs at the band edge, the observed emission occurs at the quasi-Fermi edge of the carrier distribution. As the carriers are consumed by recombination, the quasi-Fermi energy goes down toward the band edge, and we observe a continuously red-shifting streak. We interpret this emission as cooperative spontaneous recombination of electron-hole pairs, or superfluorescence (SF), which is enhanced by Coulomb interactions near the Fermi edge. This novel many-body enhancement allows the magnitude of the spontaneously developed macroscopic polarization to exceed the maximum value for ordinary SF, making electron-hole SF even more ムムsuperメメ than atomic SF.en_US
dc.identifier.citationKim, Ji-Hee, Noe, G. Timothy II, McGill, Stephen A., et al.. "Fermi-edge superfluorescence from a quantum-degenerate electron-hole gas." <i>Scientific Reports,</i> 3, (2013) Nature Publishing Group: http://dx.doi.org/10.1038/srep03283.en_US
dc.identifier.doihttp://dx.doi.org/10.1038/srep03283en_US
dc.identifier.urihttps://hdl.handle.net/1911/75255en_US
dc.language.isoengen_US
dc.publisherNature Publishing Groupen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleFermi-edge superfluorescence from a quantum-degenerate electron-hole gasen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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