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Atomic lattice excitons: from condensates to crystals
Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, A-6020 Innsbruck, Austria;Institute for Theoretical Physics, University of Innsbruck, A-6020 Innsbruck, Austria.
Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, A-6020 Innsbruck, Austria;Institute for Theoretical Physics, University of Innsbruck, A-6020 Innsbruck, Austria.
Nanoscience Center, Department of Physics, University of Jyväskylä, PO Box 35, FIN-40014, Finland.
Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, A-6020 Innsbruck, Austria;Institute for Theoretical Physics, University of Innsbruck, A-6020 Innsbruck, Austria.
2007 (English)In: New Journal of Physics, ISSN 1367-2630, E-ISSN 1367-2630, Vol. 9, no 11, p. 407-407Article in journal (Refereed) Published
Abstract [en]

We discuss atomic lattice excitons (ALEs), bound particle–hole pairs formed by fermionic atoms in two bands of an optical lattice. Such a system provides a clean set-up, with tunable masses and interactions, to study fundamental properties of excitons including exciton condensation. We also find that for a large effective mass ratio between particles and holes, effective long-range interactions can mediate the formation of an exciton crystal, for which superfluidity is suppressed. Using a combination of mean-field treatments, bosonized theory based on a Born–Oppenheimer approximation, and one-dimensional (1D) numerical computation, we discuss the properties of ALEs under varying conditions, and discuss in particular their preparation and measurement.

Place, publisher, year, edition, pages
IOP Publishing , 2007. Vol. 9, no 11, p. 407-407
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:uu:diva-336266DOI: 10.1088/1367-2630/9/11/407OAI: oai:DiVA.org:uu-336266DiVA, id: diva2:1165595
Available from: 2017-12-13 Created: 2017-12-13 Last updated: 2017-12-13

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Publisher's full textElectronic full texthttp://stacks.iop.org/1367-2630/9/i=11/a=407?key=crossref.3028d490f5b0dc368074ceb81aaab6cf http://iopscience.iop.org/1367-2630/9/11/407/fulltext/

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