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...
| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/9/1572 |
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| author | Aidar Galimov Michail Bobrov Maxim Rakhlin Yuriy Serov Dmitrii Kazanov Alexey Veretennikov Grigory Klimko Sergey Sorokin Irina Sedova Nikolai Maleev Yuriy Zadiranov Marina Kulagina Yulia Guseva Daryia Berezina Ekaterina Nikitina Alexey Toropov |
| author_facet | Aidar Galimov Michail Bobrov Maxim Rakhlin Yuriy Serov Dmitrii Kazanov Alexey Veretennikov Grigory Klimko Sergey Sorokin Irina Sedova Nikolai Maleev Yuriy Zadiranov Marina Kulagina Yulia Guseva Daryia Berezina Ekaterina Nikitina Alexey Toropov |
| author_sort | Aidar Galimov |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-11T04:11:32Z |
| format | Article |
| id | doaj.art-c9aca8aff6f4461c973c214c12254a5b |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T04:11:32Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-c9aca8aff6f4461c973c214c12254a5b2023-11-17T23:27:51ZengMDPI AGNanomaterials2079-49912023-05-01139157210.3390/nano13091572Towards Bright Single-Photon Emission in Elliptical MicropillarsAidar Galimov0Michail Bobrov1Maxim Rakhlin2Yuriy Serov3Dmitrii Kazanov4Alexey Veretennikov5Grigory Klimko6Sergey Sorokin7Irina Sedova8Nikolai Maleev9Yuriy Zadiranov10Marina Kulagina11Yulia Guseva12Daryia Berezina13Ekaterina Nikitina14Alexey Toropov15Ioffe Institute, Politekhnicheskaya St. 26, 194021 St. Petersburg, RussiaIoffe Institute, Politekhnicheskaya St. 26, 194021 St. Petersburg, RussiaIoffe Institute, Politekhnicheskaya St. 26, 194021 St. Petersburg, RussiaIoffe Institute, Politekhnicheskaya St. 26, 194021 St. Petersburg, RussiaIoffe Institute, Politekhnicheskaya St. 26, 194021 St. Petersburg, RussiaIoffe Institute, Politekhnicheskaya St. 26, 194021 St. Petersburg, RussiaIoffe Institute, Politekhnicheskaya St. 26, 194021 St. Petersburg, RussiaIoffe Institute, Politekhnicheskaya St. 26, 194021 St. Petersburg, RussiaIoffe Institute, Politekhnicheskaya St. 26, 194021 St. Petersburg, RussiaIoffe Institute, Politekhnicheskaya St. 26, 194021 St. Petersburg, RussiaIoffe Institute, Politekhnicheskaya St. 26, 194021 St. Petersburg, RussiaIoffe Institute, Politekhnicheskaya St. 26, 194021 St. Petersburg, RussiaIoffe Institute, Politekhnicheskaya St. 26, 194021 St. Petersburg, RussiaIoffe Institute, Politekhnicheskaya St. 26, 194021 St. Petersburg, RussiaLaboratory of Nanoelectronics, St. Petersburg Academic University, 194021 St. Petersburg, RussiaIoffe Institute, Politekhnicheskaya St. 26, 194021 St. Petersburg, RussiaIn 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.https://www.mdpi.com/2079-4991/13/9/1572single-photon sourceelliptical micropillarsquantum dotsoptical modes |
| spellingShingle | Aidar Galimov Michail Bobrov Maxim Rakhlin Yuriy Serov Dmitrii Kazanov Alexey Veretennikov Grigory Klimko Sergey Sorokin Irina Sedova Nikolai Maleev Yuriy Zadiranov Marina Kulagina Yulia Guseva Daryia Berezina Ekaterina Nikitina Alexey Toropov Towards Bright Single-Photon Emission in Elliptical Micropillars Nanomaterials single-photon source elliptical micropillars quantum dots optical modes |
| 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 | single-photon source elliptical micropillars quantum dots optical modes |
| url | https://www.mdpi.com/2079-4991/13/9/1572 |
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