Dicke superradiance in solids [Invited]

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dc.citation.firstpageC80en_US
dc.citation.issueNumber7en_US
dc.citation.journalTitleJournal of the Optical Society of America Ben_US
dc.citation.lastpageC101en_US
dc.citation.volumeNumber33en_US
dc.contributor.authorCong, Kankanen_US
dc.contributor.authorZhang, Qien_US
dc.contributor.authorWang, Yongruien_US
dc.contributor.authorNoe, G. Timothyen_US
dc.contributor.authorBelyanin, Alexeyen_US
dc.contributor.authorKono, Junichiroen_US
dc.date.accessioned2016-07-21T20:14:36Zen_US
dc.date.available2016-07-21T20:14:36Zen_US
dc.date.issued2016en_US
dc.description.abstractRecent advances in optical studies of condensed matter systems have led to the emergence of a variety of phenomena that have conventionally been studied in the realm of quantum optics. These studies have not only deepened our understanding of light–matter interactions but have also introduced aspects of many-body correlations inherent in optical processes in condensed matter systems. This paper is concerned with the phenomenon of superradiance (SR), a profound quantum optical process originally predicted by Dicke in 1954. The basic concept of SR applies to a general N body system, where constituent oscillating dipoles couple together through interaction with a common light field and accelerate the radiative decay of the whole system. Hence, the term SR ubiquitously appears in order to describe radiative coupling of an arbitrary number of oscillators in many situations in modern science of both classical and quantum description. In the most fascinating manifestation of SR, known as superfluorescence (SF), an incoherently prepared system of N inverted atoms spontaneously develops macroscopic coherence from vacuum fluctuations and produces a delayed pulse of coherent light whose peak intensity ∝𝑁2. Such SF pulses have been observed in atomic and molecular gases, and their intriguing quantum nature has been unambiguously demonstrated. In this review, we focus on the rapidly developing field of research on SR phenomena in solids, where not only photon-mediated coupling (as in atoms) but also strong Coulomb interactions and ultrafast scattering processes exist. We describe SR and SF in molecular centers in solids, molecular aggregates and crystals, quantum dots, and quantum wells. In particular, we will summarize a series of studies we have recently performed on semiconductor quantum wells in the presence of a strong magnetic field. In one type of experiment, electron-hole pairs were incoherently prepared, but a macroscopic polarization spontaneously emerged and cooperatively decayed, emitting an intense SF burst. In another type of experiment, we observed the SR decay of coherent cyclotron resonance of ultrahigh-mobility 2D electron gases, leading to a decay rate that is proportional to the electron density. These results show that cooperative effects in solid-state systems are not merely small corrections that require exotic conditions to be observed; rather, they can dominate the nonequilibrium dynamics and light emission processes of the entire system of interacting electrons.en_US
dc.identifier.citationCong, Kankan, Zhang, Qi, Wang, Yongrui, et al.. "Dicke superradiance in solids [Invited]." <i>Journal of the Optical Society of America B,</i> 33, no. 7 (2016) The Optical Society: C80-C101. http://dx.doi.org/10.1364/JOSAB.33.000C80.en_US
dc.identifier.doihttp://dx.doi.org/10.1364/JOSAB.33.000C80en_US
dc.identifier.urihttps://hdl.handle.net/1911/90941en_US
dc.language.isoengen_US
dc.publisherThe Optical Societyen_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.titleDicke superradiance in solids [Invited]en_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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