Enhancing the efficiency of quantum-dot-based single-photon source designs by suppressing background emission using concentric rings
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866914579631570944 |
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| author | Jacobsen, Martin Arentoft Vannucci, Luca Claudon, Julien Gérard, Jean-Michel Gregersen, Niels |
| author_facet | Jacobsen, Martin Arentoft Vannucci, Luca Claudon, Julien Gérard, Jean-Michel Gregersen, Niels |
| contents | In this paper, we theoretically demonstrate that a few-period circular Bragg reflector consisting of concentric rings placed around an infinite nanowire with an embedded quantum dot can increase the fraction of radiative emission into the fundamental $\mathrm{HE}_{11}$ mode ($β=Γ_{\rm HE_{11}}/Γ_{\rm Total}$) up to 0.999 due to enhanced suppression of the emission into radiation modes caused by a photonic bandgap effect. We then apply this strategy in the practically relevant case of the finite-sized single-photon source based on tapered nanowires and demonstrate that the collection efficiency can be improved. Additionally, we also show the beneficial effects of placing optimized rings around the micropillar single-photon source. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_03619 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Enhancing the efficiency of quantum-dot-based single-photon source designs by suppressing background emission using concentric rings Jacobsen, Martin Arentoft Vannucci, Luca Claudon, Julien Gérard, Jean-Michel Gregersen, Niels Optics Quantum Physics In this paper, we theoretically demonstrate that a few-period circular Bragg reflector consisting of concentric rings placed around an infinite nanowire with an embedded quantum dot can increase the fraction of radiative emission into the fundamental $\mathrm{HE}_{11}$ mode ($β=Γ_{\rm HE_{11}}/Γ_{\rm Total}$) up to 0.999 due to enhanced suppression of the emission into radiation modes caused by a photonic bandgap effect. We then apply this strategy in the practically relevant case of the finite-sized single-photon source based on tapered nanowires and demonstrate that the collection efficiency can be improved. Additionally, we also show the beneficial effects of placing optimized rings around the micropillar single-photon source. |
| title | Enhancing the efficiency of quantum-dot-based single-photon source designs by suppressing background emission using concentric rings |
| topic | Optics Quantum Physics |
| url | https://arxiv.org/abs/2307.03619 |