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Momentum considerations inside near-zero index materials

Near-zero index (NZI) materials, i.e., materials having a phase refractive index close to zero, are known to enhance or inhibit light-matter interactions. Most theoretical derivations of fundamental radiative processes rely on energetic considerations and detailed balance equations, but not on momen...

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Autores principales: Lobet, Michaël, Liberal, Iñigo, Vertchenko, Larissa, Lavrinenko, Andrei V., Engheta, Nader, Mazur, Eric
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9039083/
https://www.ncbi.nlm.nih.gov/pubmed/35468887
http://dx.doi.org/10.1038/s41377-022-00790-z
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author Lobet, Michaël
Liberal, Iñigo
Vertchenko, Larissa
Lavrinenko, Andrei V.
Engheta, Nader
Mazur, Eric
author_facet Lobet, Michaël
Liberal, Iñigo
Vertchenko, Larissa
Lavrinenko, Andrei V.
Engheta, Nader
Mazur, Eric
author_sort Lobet, Michaël
collection PubMed
description Near-zero index (NZI) materials, i.e., materials having a phase refractive index close to zero, are known to enhance or inhibit light-matter interactions. Most theoretical derivations of fundamental radiative processes rely on energetic considerations and detailed balance equations, but not on momentum considerations. Because momentum exchange should also be incorporated into theoretical models, we investigate momentum inside the three categories of NZI materials, i.e., inside epsilon-and-mu-near-zero (EMNZ), epsilon-near-zero (ENZ) and mu-near-zero (MNZ) materials. In the context of Abraham–Minkowski debate in dispersive materials, we show that Minkowski-canonical momentum of light is zero inside all categories of NZI materials while Abraham-kinetic momentum of light is zero in ENZ and MNZ materials but nonzero inside EMNZ materials. We theoretically demonstrate that momentum recoil, transfer momentum from the field to the atom and Doppler shift are inhibited in NZI materials. Fundamental radiative processes inhibition is also explained due to those momentum considerations inside three-dimensional NZI materials. Absence of diffraction pattern in slits experiments is seen as a consequence of zero Minkowski momentum. Lastly, consequence on Heisenberg inequality, microscopy applications and on the canonical momentum as generator of translations are discussed. Those findings are appealing for a better understanding of fundamental light-matter interactions at the nanoscale as well as for lasing applications.
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spelling pubmed-90390832022-04-28 Momentum considerations inside near-zero index materials Lobet, Michaël Liberal, Iñigo Vertchenko, Larissa Lavrinenko, Andrei V. Engheta, Nader Mazur, Eric Light Sci Appl Article Near-zero index (NZI) materials, i.e., materials having a phase refractive index close to zero, are known to enhance or inhibit light-matter interactions. Most theoretical derivations of fundamental radiative processes rely on energetic considerations and detailed balance equations, but not on momentum considerations. Because momentum exchange should also be incorporated into theoretical models, we investigate momentum inside the three categories of NZI materials, i.e., inside epsilon-and-mu-near-zero (EMNZ), epsilon-near-zero (ENZ) and mu-near-zero (MNZ) materials. In the context of Abraham–Minkowski debate in dispersive materials, we show that Minkowski-canonical momentum of light is zero inside all categories of NZI materials while Abraham-kinetic momentum of light is zero in ENZ and MNZ materials but nonzero inside EMNZ materials. We theoretically demonstrate that momentum recoil, transfer momentum from the field to the atom and Doppler shift are inhibited in NZI materials. Fundamental radiative processes inhibition is also explained due to those momentum considerations inside three-dimensional NZI materials. Absence of diffraction pattern in slits experiments is seen as a consequence of zero Minkowski momentum. Lastly, consequence on Heisenberg inequality, microscopy applications and on the canonical momentum as generator of translations are discussed. Those findings are appealing for a better understanding of fundamental light-matter interactions at the nanoscale as well as for lasing applications. Nature Publishing Group UK 2022-04-25 /pmc/articles/PMC9039083/ /pubmed/35468887 http://dx.doi.org/10.1038/s41377-022-00790-z Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Lobet, Michaël
Liberal, Iñigo
Vertchenko, Larissa
Lavrinenko, Andrei V.
Engheta, Nader
Mazur, Eric
Momentum considerations inside near-zero index materials
title Momentum considerations inside near-zero index materials
title_full Momentum considerations inside near-zero index materials
title_fullStr Momentum considerations inside near-zero index materials
title_full_unstemmed Momentum considerations inside near-zero index materials
title_short Momentum considerations inside near-zero index materials
title_sort momentum considerations inside near-zero index materials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9039083/
https://www.ncbi.nlm.nih.gov/pubmed/35468887
http://dx.doi.org/10.1038/s41377-022-00790-z
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