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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">najo</journal-id><journal-title-group><journal-title xml:lang="en">Nanosystems: Physics, Chemistry, Mathematics</journal-title><trans-title-group xml:lang="ru"><trans-title>Наносистемы: физика, химия, математика</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-8054</issn><issn pub-type="epub">2305-7971</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2220-8054-2015-6-1-6-45</article-id><article-id custom-type="elpub" pub-id-type="custom">najo-898</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>INVITED SPEAKERS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>INVITED SPEAKERS</subject></subj-group></article-categories><title-group><article-title>A new model for quantum dot light emitting-absorbing devices: proofs and supplements</article-title><trans-title-group xml:lang="ru"><trans-title></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Neidhardt</surname><given-names>H.</given-names></name></name-alternatives><bio xml:lang="en"><p>Mohrenstr. 39, 10117 Berlin</p><p>39, rue F. Joliot Curie 13453 Marseille Cedex 13</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Wilhelm</surname><given-names>L.</given-names></name></name-alternatives><bio xml:lang="en"><p>39, rue F. Joliot Curie 13453 Marseille Cedex 13</p></bio><email xlink:type="simple">Valentin.Zagrebnov@univ-amu.fr</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Zagrebnov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>39, rue F. Joliot Curie 13453 Marseille Cedex 13</p></bio><email xlink:type="simple">Valentin.Zagrebnov@univ-amu.fr</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>WIAS Berlin; 3Institut de Mathématiques de Marseille - UMR 7373 CMI - Technopôle Château-Gombert</institution><country>Germany</country></aff><aff xml:lang="en" id="aff-2"><institution>Institut de Mathématiques de Marseille - UMR 7373 CMI - Technopôle Château-Gombert</institution><country>France</country></aff><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>15</day><month>08</month><year>2025</year></pub-date><volume>6</volume><issue>1</issue><fpage>6</fpage><lpage>45</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Neidhardt H., Wilhelm L., Zagrebnov V.A., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Neidhardt H., Wilhelm L., Zagrebnov V.A.</copyright-holder><copyright-holder xml:lang="en">Neidhardt H., Wilhelm L., Zagrebnov V.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://nanojournal.ifmo.ru/jour/article/view/898">https://nanojournal.ifmo.ru/jour/article/view/898</self-uri><abstract><p>Motivated by the Jaynes-Cummings (JC) model, we consider here a quantum dot coupled simultaneously to a reservoir of photons and to two electric leads (free-fermion reservoirs). This new Jaynes-Cummings-Leads (JCL) model permits a fermion current through the dot to create a photon flux, which describes a light-emitting device. The same model is also used to describe the transformation of a photon flux into a current of fermions, i.e. a quantum dot light-absorbing device. The key tool to obtain these results is the abstract Landauer-Büttiker formula.</p></abstract><kwd-group xml:lang="en"><kwd>Landauer-Büttiker formula</kwd><kwd>Jaynes-Cummings model</kwd><kwd>coupling to leads</kwd><kwd>light emission</kwd><kwd>solar cells</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The first two authors would like to thank the University of Aalborg and the Centre de Physique Théorique - Luminy for hospitality and financial support. We thank Horia D. Cornean for discussions concerning the JCL-model and Igor Yu.Popov for the opportunity to present this complete version of our results. 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