Electronic transitions in disk-shaped quantum dots induced by twisted light

We theoretically investigate the absorption and emission of light carrying orbital angular momentum (twisted light) by quasi-two-dimensional (disk-shaped) quantum dots in the presence of a static magnetic field. We calculate the transition matrix element for the light-matter interaction and use it t...

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Autores principales: Quinteiro, Guillermo, Tamborenea, Pablo Ignacio
Publicado: 2009
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v79_n15_p_Quinteiro
http://hdl.handle.net/20.500.12110/paper_10980121_v79_n15_p_Quinteiro
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_10980121_v79_n15_p_Quinteiro
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spelling paper:paper_10980121_v79_n15_p_Quinteiro2023-06-08T16:07:43Z Electronic transitions in disk-shaped quantum dots induced by twisted light Quinteiro, Guillermo Tamborenea, Pablo Ignacio We theoretically investigate the absorption and emission of light carrying orbital angular momentum (twisted light) by quasi-two-dimensional (disk-shaped) quantum dots in the presence of a static magnetic field. We calculate the transition matrix element for the light-matter interaction and use it to explore different scenarios, depending on the initial and final states of the electron undergoing the optically induced transition. We make explicit the selection rule for the conservation of the z projection of the orbital angular momentum. For a realistic set of parameters (quantum dot size, beam waist, photon energy, etc.) the strength of the transition induced by twisted light is 10% of that induced by plane waves. Finally, our analysis indicates that it may be possible to select precisely the electronic level one wishes to populate using the appropriate combination of light-beam parameters suggesting technological applications to the quantum control of electronic states in quantum dots. © 2009 The American Physical Society. Fil:Quinteiro, G.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Tamborenea, P.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v79_n15_p_Quinteiro http://hdl.handle.net/20.500.12110/paper_10980121_v79_n15_p_Quinteiro
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We theoretically investigate the absorption and emission of light carrying orbital angular momentum (twisted light) by quasi-two-dimensional (disk-shaped) quantum dots in the presence of a static magnetic field. We calculate the transition matrix element for the light-matter interaction and use it to explore different scenarios, depending on the initial and final states of the electron undergoing the optically induced transition. We make explicit the selection rule for the conservation of the z projection of the orbital angular momentum. For a realistic set of parameters (quantum dot size, beam waist, photon energy, etc.) the strength of the transition induced by twisted light is 10% of that induced by plane waves. Finally, our analysis indicates that it may be possible to select precisely the electronic level one wishes to populate using the appropriate combination of light-beam parameters suggesting technological applications to the quantum control of electronic states in quantum dots. © 2009 The American Physical Society.
author Quinteiro, Guillermo
Tamborenea, Pablo Ignacio
spellingShingle Quinteiro, Guillermo
Tamborenea, Pablo Ignacio
Electronic transitions in disk-shaped quantum dots induced by twisted light
author_facet Quinteiro, Guillermo
Tamborenea, Pablo Ignacio
author_sort Quinteiro, Guillermo
title Electronic transitions in disk-shaped quantum dots induced by twisted light
title_short Electronic transitions in disk-shaped quantum dots induced by twisted light
title_full Electronic transitions in disk-shaped quantum dots induced by twisted light
title_fullStr Electronic transitions in disk-shaped quantum dots induced by twisted light
title_full_unstemmed Electronic transitions in disk-shaped quantum dots induced by twisted light
title_sort electronic transitions in disk-shaped quantum dots induced by twisted light
publishDate 2009
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v79_n15_p_Quinteiro
http://hdl.handle.net/20.500.12110/paper_10980121_v79_n15_p_Quinteiro
work_keys_str_mv AT quinteiroguillermo electronictransitionsindiskshapedquantumdotsinducedbytwistedlight
AT tamboreneapabloignacio electronictransitionsindiskshapedquantumdotsinducedbytwistedlight
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