Deterministic optical polarisation in nitride quantum dots at thermoelectrically cooled temperatures

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dc.contributor.author Wang, Tong
dc.contributor.author Puchtler, Tim J.
dc.contributor.author Patra, Saroj K.
dc.contributor.author Zhu, Tongtong
dc.contributor.author Jarman, John C.
dc.contributor.author Oliver, Rachel A.
dc.contributor.author Schulz, Stefan
dc.contributor.author Taylor, Robert A.
dc.date.accessioned 2017-12-08T13:33:42Z
dc.date.available 2017-12-08T13:33:42Z
dc.date.issued 2017-09-21
dc.identifier.citation Wang, T., Puchtler, T. J., Patra, S. K., Zhu, T., Jarman, J. C., Oliver, R. A., Schulz, S. and Taylor, R. A. (2017) 'Deterministic optical polarisation in nitride quantum dots at thermoelectrically cooled temperatures', Scientific Reports, 7, 12067 (9pp). doi: 10.1038/s41598-017-12233-6 en
dc.identifier.volume 7
dc.identifier.startpage 1
dc.identifier.endpage 9
dc.identifier.issn 2045-2322
dc.identifier.uri http://hdl.handle.net/10468/5137
dc.identifier.doi 10.1038/s41598-017-12233-6
dc.description.abstract We report the successful realisation of intrinsic optical polarisation control by growth, in solid-state quantum dots in the thermoelectrically cooled temperature regime (≥200 K), using a non-polar InGaN system. With statistically significant experimental data from cryogenic to high temperatures, we show that the average polarisation degree of such a system remains constant at around 0.90, below 100 K, and decreases very slowly at higher temperatures until reaching 0.77 at 200 K, with an unchanged polarisation axis determined by the material crystallography. A combination of Fermi-Dirac statistics and k·p theory with consideration of quantum dot anisotropy allows us to elucidate the origin of the robust, almost temperature-insensitive polarisation properties of this system from a fundamental perspective, producing results in very good agreement with the experimental findings. This work demonstrates that optical polarisation control can be achieved in solid-state quantum dots at thermoelectrically cooled temperatures, thereby opening the possibility of polarisation-based quantum dot applications in on-chip conditions. en
dc.description.sponsorship Engineering and Physical Sciences Research Council (EP/M012379/1; EP/M011682/1); Agency for Science, Technology and Research (National Science Scholarship); Leverhulme Trust (Senior Research Fellowship) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Nature Publishing Group en
dc.relation.uri https://www.nature.com/articles/s41598-017-12233-6
dc.rights © 2017, the Authors 2017. 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/. en
dc.rights.uri http://creativecommons.org/licenses/by/4.0/
dc.subject Quantum dots en
dc.subject Quantum optics en
dc.title Deterministic optical polarisation in nitride quantum dots at thermoelectrically cooled temperatures en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Stefan Schulz, Tyndall National Institute, University College Cork, Cork, Ireland. +353-21-490-3000 Email: stefan.schulz@tyndall.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.contributor.funder Leverhulme Trust
dc.contributor.funder Royal Academy of Engineering
dc.contributor.funder Agency for Science, Technology and Research
dc.contributor.funder Science Foundation Ireland
dc.contributor.funder Engineering and Physical Sciences Research Council
dc.description.status Peer reviewed en
dc.identifier.journaltitle Scientific Reports en
dc.internal.IRISemailaddress stefan.schulz@tyndall.ie en
dc.identifier.articleid 12067
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI Starting Investigator Research Grant (SIRG)/13/SIRG/2210/IE/Shaping the electronic and optical properties of non- and semi-polar nitride-based semiconductor nanostructures/


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© 2017, the Authors 2017. 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/. Except where otherwise noted, this item's license is described as © 2017, the Authors 2017. 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/.
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