Metal-Dielectric Nanopillar Antenna-Resonators for Efficient Collected Photon Rate from Silicon Carbide Color Centers
A yet unresolved challenge in developing quantum technologies based on color centres in high refractive index semiconductors is the efficient fluorescence enhancement of point defects in bulk materials. Optical resonators and antennas have been designed to provide directional emission, spontaneous e...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/1/195 |
| _version_ | 1827624233241411584 |
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| author | Faraz Ahmed Inam Stefania Castelletto |
| author_facet | Faraz Ahmed Inam Stefania Castelletto |
| author_sort | Faraz Ahmed Inam |
| collection | DOAJ |
| description | A yet unresolved challenge in developing quantum technologies based on color centres in high refractive index semiconductors is the efficient fluorescence enhancement of point defects in bulk materials. Optical resonators and antennas have been designed to provide directional emission, spontaneous emission rate enhancement and collection efficiency enhancement at the same time. While collection efficiency enhancement can be achieved by individual nanopillars or nanowires, fluorescent emission enhancement is achieved using nanoresonators or nanoantennas. In this work, we optimise the design of a metal-dielectric nanopillar-based antenna/resonator fabricated in a silicon carbide (SiC) substrate with integrated quantum emitters. Here we consider various color centres known in SiC such as silicon mono-vacancy and the carbon antisite vacancy pair, that show single photon emission and quantum sensing functionalities with optical electron spin read-out, respectively. We model the dipole emission fluorescence rate of these color centres into the metal-dielectric nanopillar hybrid antenna resonator using multi-polar electromagnetic scattering resonances and near-field plasmonic field enhancement and confinement. We calculate the fluorescence collected photon rate enhancement for these solid state vacancy-centers in SiC in these metal-dielectric nanopillar resonators, showing a trade-off effect between the collection efficiency and radiative Purcell factor enhancement. We obtained a collected photon rate enhancement from a silicon monovacancy vacancy center embedded in an optimised hybrid antenna-resonator two orders of magnitude larger compared to the case of the color centres in bulk material. |
| first_indexed | 2024-03-09T12:04:58Z |
| format | Article |
| id | doaj.art-a6fbb1442c674a43b547dbf74dde6a63 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T12:04:58Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-a6fbb1442c674a43b547dbf74dde6a632023-11-30T22:59:49ZengMDPI AGNanomaterials2079-49912023-01-0113119510.3390/nano13010195Metal-Dielectric Nanopillar Antenna-Resonators for Efficient Collected Photon Rate from Silicon Carbide Color CentersFaraz Ahmed Inam0Stefania Castelletto1Department of Physics, Aligarh Muslim University, Aligarh 20002, IndiaSchool of Engineering, RMIT University, Melbourne, VIC 3001, AustraliaA yet unresolved challenge in developing quantum technologies based on color centres in high refractive index semiconductors is the efficient fluorescence enhancement of point defects in bulk materials. Optical resonators and antennas have been designed to provide directional emission, spontaneous emission rate enhancement and collection efficiency enhancement at the same time. While collection efficiency enhancement can be achieved by individual nanopillars or nanowires, fluorescent emission enhancement is achieved using nanoresonators or nanoantennas. In this work, we optimise the design of a metal-dielectric nanopillar-based antenna/resonator fabricated in a silicon carbide (SiC) substrate with integrated quantum emitters. Here we consider various color centres known in SiC such as silicon mono-vacancy and the carbon antisite vacancy pair, that show single photon emission and quantum sensing functionalities with optical electron spin read-out, respectively. We model the dipole emission fluorescence rate of these color centres into the metal-dielectric nanopillar hybrid antenna resonator using multi-polar electromagnetic scattering resonances and near-field plasmonic field enhancement and confinement. We calculate the fluorescence collected photon rate enhancement for these solid state vacancy-centers in SiC in these metal-dielectric nanopillar resonators, showing a trade-off effect between the collection efficiency and radiative Purcell factor enhancement. We obtained a collected photon rate enhancement from a silicon monovacancy vacancy center embedded in an optimised hybrid antenna-resonator two orders of magnitude larger compared to the case of the color centres in bulk material.https://www.mdpi.com/2079-4991/13/1/195emission electromagnetic-dynamicsMie scatteringnanopillarssilicon carbidevacancy siliconsingle-photon sources |
| spellingShingle | Faraz Ahmed Inam Stefania Castelletto Metal-Dielectric Nanopillar Antenna-Resonators for Efficient Collected Photon Rate from Silicon Carbide Color Centers Nanomaterials emission electromagnetic-dynamics Mie scattering nanopillars silicon carbide vacancy silicon single-photon sources |
| title | Metal-Dielectric Nanopillar Antenna-Resonators for Efficient Collected Photon Rate from Silicon Carbide Color Centers |
| title_full | Metal-Dielectric Nanopillar Antenna-Resonators for Efficient Collected Photon Rate from Silicon Carbide Color Centers |
| title_fullStr | Metal-Dielectric Nanopillar Antenna-Resonators for Efficient Collected Photon Rate from Silicon Carbide Color Centers |
| title_full_unstemmed | Metal-Dielectric Nanopillar Antenna-Resonators for Efficient Collected Photon Rate from Silicon Carbide Color Centers |
| title_short | Metal-Dielectric Nanopillar Antenna-Resonators for Efficient Collected Photon Rate from Silicon Carbide Color Centers |
| title_sort | metal dielectric nanopillar antenna resonators for efficient collected photon rate from silicon carbide color centers |
| topic | emission electromagnetic-dynamics Mie scattering nanopillars silicon carbide vacancy silicon single-photon sources |
| url | https://www.mdpi.com/2079-4991/13/1/195 |
| work_keys_str_mv | AT farazahmedinam metaldielectricnanopillarantennaresonatorsforefficientcollectedphotonratefromsiliconcarbidecolorcenters AT stefaniacastelletto metaldielectricnanopillarantennaresonatorsforefficientcollectedphotonratefromsiliconcarbidecolorcenters |