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|a dc
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|a Bravo-Abad, Jorge
|e author
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|a Massachusetts Institute of Technology. Department of Physics
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|a Joannopoulos, John D.
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|a Soljacic, Marin
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|a Joannopoulos, John D.
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|a Soljacic, Marin
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|a Enabling single-mode behavior over large areas with photonic Dirac cones
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|b National Academy of Sciences (U.S.),
|c 2013-02-06T16:57:14Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/76750
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|a This article contains supporting information online at www.pnas.org/lookup/suppl/doi:10.1073/pnas.1207335109/-/DCSupplemental
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|a Many of graphene's unique electronic properties emerge from its Dirac-like electronic energy spectrum. Similarly, it is expected that a nanophotonic system featuring Dirac dispersion (two conical bands touching at a single point, the so-called Dirac point) will open a path to a number of important research avenues. To date, however, all proposed realizations of a photonic analog of graphene lack fully omnidirectional out-of-plane light confinement, which has prevented creating truly realistic implementations of this class of systems able to mimic the two-dimensional transport properties of graphene. Here we report on a novel route to achieve all-dielectric three-dimensional photonic materials featuring Dirac-like dispersion in a quasi-two-dimensional system. We further discuss how this finding could enable a dramatic enhancement of the spontaneous emission coupling efficiency (the β-factor) over large areas, defying the common wisdom that the β-factor degrades rapidly as the size of the system increases. These results might enable general new classes of large-area ultralow-threshold lasers, single-photon sources, quantum information processing devices and energy harvesting systems.
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|a National Science Foundation (U.S.) (Materials Research Science and Engineering Centers Program, award DMR-0819762)
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|a United States. Dept. of Energy (MIT S3TEC Energy Research Frontier Center, Grant DE-SC0001299)
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|a United States. Army Research Office (Institute for Soldier Nanotechnologies, under contract W911NF-07-D0004)
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|a Spain. Ministerio de Ciencia e Innovacion (Ramon-y-Cajal program, Grant RyC-2009-05489)
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|a en_US
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|a Article
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|t Proceedings of the National Academy of Sciences of the United States of America
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