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Basic modelling of transport in 2D wave-mechanical nanodots and billiards with balanced gain and loss mediated by complex potentials
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, Faculty of Science & Engineering.
Lund Univ, Sweden.
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, Faculty of Science & Engineering.
2018 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 30, no 20, article id 204003Article in journal (Refereed) Published
Abstract [en]

Non-Hermitian quantum mechanics with parity-time (PT) symmetry is presently gaining great interest, especially within the fields of photonics and optics. Here, we give a brief overview of low-dimensional semiconductor nanodevices using the example of a quantum dot with input and output leads, which are mimicked by imaginary potentials for gain and loss, and how wave functions, particle flow, coalescence of levels and associated breaking of PT symmetry may be analysed within such a framework. Special attention is given to the presence of exceptional points and symmetry breaking. Related features for musical string instruments and wolf-notes are outlined briefly with suggestions for further experiments.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2018. Vol. 30, no 20, article id 204003
Keywords [en]
open quantum dots; transport; non-Hermitian quantum mechanics; parity-time symmetry; symmetry breaking; exceptional points; musical instruments
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URN: urn:nbn:se:liu:diva-147905DOI: 10.1088/1361-648X/aabbfcISI: 000431067600001PubMedID: 29620539OAI: oai:DiVA.org:liu-147905DiVA, id: diva2:1209622
Available from: 2018-05-23 Created: 2018-05-23 Last updated: 2018-06-13

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Berggren, Karl-FredrikYakymenko, Iryna
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  • harvard1
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