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Towards Bright Single-Photon Emission in Elliptical Micropillars
In recent years, single-photon sources (SPSs) based on the emission of a single semiconductor quantum dot (QD) have been actively developed. While the purity and indistinguishability of single photons are already close to ideal values, the high brightness of SPSs remains a challenge. The widely used...
Autores principales: | , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10180743/ https://www.ncbi.nlm.nih.gov/pubmed/37177116 http://dx.doi.org/10.3390/nano13091572 |
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author | Galimov, Aidar Bobrov, Michail Rakhlin, Maxim Serov, Yuriy Kazanov, Dmitrii Veretennikov, Alexey Klimko, Grigory Sorokin, Sergey Sedova, Irina Maleev, Nikolai Zadiranov, Yuriy Kulagina, Marina Guseva, Yulia Berezina, Daryia Nikitina, Ekaterina Toropov, Alexey |
author_facet | Galimov, Aidar Bobrov, Michail Rakhlin, Maxim Serov, Yuriy Kazanov, Dmitrii Veretennikov, Alexey Klimko, Grigory Sorokin, Sergey Sedova, Irina Maleev, Nikolai Zadiranov, Yuriy Kulagina, Marina Guseva, Yulia Berezina, Daryia Nikitina, Ekaterina Toropov, Alexey |
author_sort | Galimov, Aidar |
collection | PubMed |
description | In recent years, single-photon sources (SPSs) based on the emission of a single semiconductor quantum dot (QD) have been actively developed. While the purity and indistinguishability of single photons are already close to ideal values, the high brightness of SPSs remains a challenge. The widely used resonant excitation with cross-polarization filtering usually leads to at least a two-fold reduction in the single-photon counts rate, since single-photon emission is usually unpolarized, or its polarization state is close to that of the exciting laser. One of the solutions is the use of polarization-selective microcavities, which allows one to redirect most of the QD emission to a specific polarization determined by the optical mode of the microcavity. In the present work, elliptical micropillars with distributed Bragg reflectors are investigated theoretically and experimentally as a promising design of such polarization-selective microcavities. The impact of ellipticity, ellipse area and verticality of the side walls on the splitting of the optical fundamental mode is investigated. The study of the near-field pattern allows us to detect the presence of higher-order optical modes, which are classified theoretically. The possibility of obtaining strongly polarized single-photon QD radiation associated with the short-wavelength fundamental cavity mode is shown. |
format | Online Article Text |
id | pubmed-10180743 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-101807432023-05-13 Towards Bright Single-Photon Emission in Elliptical Micropillars Galimov, Aidar Bobrov, Michail Rakhlin, Maxim Serov, Yuriy Kazanov, Dmitrii Veretennikov, Alexey Klimko, Grigory Sorokin, Sergey Sedova, Irina Maleev, Nikolai Zadiranov, Yuriy Kulagina, Marina Guseva, Yulia Berezina, Daryia Nikitina, Ekaterina Toropov, Alexey Nanomaterials (Basel) Article In recent years, single-photon sources (SPSs) based on the emission of a single semiconductor quantum dot (QD) have been actively developed. While the purity and indistinguishability of single photons are already close to ideal values, the high brightness of SPSs remains a challenge. The widely used resonant excitation with cross-polarization filtering usually leads to at least a two-fold reduction in the single-photon counts rate, since single-photon emission is usually unpolarized, or its polarization state is close to that of the exciting laser. One of the solutions is the use of polarization-selective microcavities, which allows one to redirect most of the QD emission to a specific polarization determined by the optical mode of the microcavity. In the present work, elliptical micropillars with distributed Bragg reflectors are investigated theoretically and experimentally as a promising design of such polarization-selective microcavities. The impact of ellipticity, ellipse area and verticality of the side walls on the splitting of the optical fundamental mode is investigated. The study of the near-field pattern allows us to detect the presence of higher-order optical modes, which are classified theoretically. The possibility of obtaining strongly polarized single-photon QD radiation associated with the short-wavelength fundamental cavity mode is shown. MDPI 2023-05-08 /pmc/articles/PMC10180743/ /pubmed/37177116 http://dx.doi.org/10.3390/nano13091572 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Galimov, Aidar Bobrov, Michail Rakhlin, Maxim Serov, Yuriy Kazanov, Dmitrii Veretennikov, Alexey Klimko, Grigory Sorokin, Sergey Sedova, Irina Maleev, Nikolai Zadiranov, Yuriy Kulagina, Marina Guseva, Yulia Berezina, Daryia Nikitina, Ekaterina Toropov, Alexey Towards Bright Single-Photon Emission in Elliptical Micropillars |
title | Towards Bright Single-Photon Emission in Elliptical Micropillars |
title_full | Towards Bright Single-Photon Emission in Elliptical Micropillars |
title_fullStr | Towards Bright Single-Photon Emission in Elliptical Micropillars |
title_full_unstemmed | Towards Bright Single-Photon Emission in Elliptical Micropillars |
title_short | Towards Bright Single-Photon Emission in Elliptical Micropillars |
title_sort | towards bright single-photon emission in elliptical micropillars |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10180743/ https://www.ncbi.nlm.nih.gov/pubmed/37177116 http://dx.doi.org/10.3390/nano13091572 |
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