Direct generation of linearly polarized single photons with a deterministic axis in quantum dots

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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 Ali, Muhammad
dc.contributor.author Badcock, Tom J.
dc.contributor.author Ding, Tao
dc.contributor.author Oliver, Rachel A.
dc.contributor.author Schulz, Stefan
dc.contributor.author Taylor, Robert A.
dc.date.accessioned 2017-09-19T15:24:06Z
dc.date.available 2017-09-19T15:24:06Z
dc.date.issued 2017-07-21
dc.identifier.citation Wang, T., Puchtler, T. J., Patra, S. K., Zhu, T., Ali, M., Badcock, T. J., Ding, T., Oliver, R. A., Schulz, S. and Taylor, R. A. (2017) 'Direct generation of linearly polarized single photons with a deterministic axis in quantum dots'. Nanophotonics, 6 (5), pp. 1175-1183. doi:10.1515/nanoph-2017-0027 en
dc.identifier.volume 6 en
dc.identifier.issued 5 en
dc.identifier.startpage 1175 en
dc.identifier.endpage 1183 en
dc.identifier.issn 2192-8606
dc.identifier.uri http://hdl.handle.net/10468/4710
dc.identifier.doi 10.1515/nanoph-2017-0027
dc.description.abstract We report the direct generation of linearly polarized single photons with a deterministic polarization axis in self-assembled quantum dots (QDs), achieved by the use of non-polar InGaN without complex device geometry engineering. Here, we present a comprehensive investigation of the polarization properties of these QDs and their origin with statistically significant experimental data and rigorous k·p modeling. The experimental study of 180 individual QDs allows us to compute an average polarization degree of 0.90, with a standard deviation of only 0.08. When coupled with theoretical insights, we show that these QDs are highly insensitive to size differences, shape anisotropies, and material content variations. Furthermore, 91% of the studied QDs exhibit a polarization axis along the crystal [1–100] axis, with the other 9% polarized orthogonal to this direction. These features give non-polar InGaN QDs unique advantages in polarization control over other materials, such as conventional polar nitride, InAs, or CdSe QDs. Hence, the ability to generate single photons with polarization control makes non-polar InGaN QDs highly attractive for quantum cryptography protocols. en
dc.description.sponsorship UK Engineering and Physical Sciences Research Council (EPSRC Grants EP/M012379/1 and EP/M011682/1); Science Foundation Ireland (SFI Project No. 13/SIRG/2210) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher De Gruyter Open en
dc.rights ©2017, Tong Wang and Saroj K. Patra et al., published by De Gruyter. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License en
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/3.0/ en
dc.subject a-plane InGaN en
dc.subject Deterministic polarization axis en
dc.subject Linearly polarized single photon en
dc.subject Quantum dots en
dc.subject k p theory en
dc.title Direct generation of linearly polarized single photons with a deterministic axis in quantum dots en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Saroj Kanta Patra, Studentships, University College Cork, Cork, Ireland. +353-21-490-3000 Email: sarojkanta.patra@tyndall.ie en
dc.internal.availability Full text available en
dc.date.updated 2017-09-19T15:08:15Z
dc.description.version Published Version en
dc.internal.rssid 411665790
dc.internal.wokid WOS:000407233400027
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder Engineering and Physical Sciences Research Council en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Nanophotonics en
dc.internal.copyrightchecked No !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress sarojkanta.patra@tyndall.ie en


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©2017, Tong Wang and Saroj K. Patra et al., published by De Gruyter. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License Except where otherwise noted, this item's license is described as ©2017, Tong Wang and Saroj K. Patra et al., published by De Gruyter. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License
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