Quantum Pair Generation in Nonlinear Metasurfaces with Mixed and Pure Photon Polarizations
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866909463568449536 |
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| author | Noh, Jiho Santiago-Cruz, Tomás Sultanov, Vitaliy Doiron, Chloe F. Gennaro, Sylvain D. Chekhova, Maria V. Brener, Igal |
| author_facet | Noh, Jiho Santiago-Cruz, Tomás Sultanov, Vitaliy Doiron, Chloe F. Gennaro, Sylvain D. Chekhova, Maria V. Brener, Igal |
| contents | Metasurfaces are highly effective at manipulating classical light in the linear regime; however, effectively controlling the polarization of non-classical light generated from nonlinear resonant metasurfaces remains a challenge. Here, we present a solution by achieving polarization engineering of frequency-nondegenerate biphotons emitted via spontaneous parametric down-conversion (SPDC) in GaAs metasurfaces, where quasi-bound states in the continuum (qBIC) resonances were utilized for boosting the biphoton generation. By performing a comprehensive polarization tomography, we demonstrate that the polarization of the emitted photons directly reflects the qBIC mode's far-field properties. Furthermore, we show that both the type of qBIC mode and the symmetry of the meta-atoms can be tailored to control each single-photon polarization state, and that the subsequent two-photon polarization states are nearly separable, offering potential applications in the heralded generation of single photons with adjustable polarization. This work provides a significant step towards utilizing metasurfaces to not only generate quantum light but also engineer their polarization, a critical aspect for future quantum technologies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_04569 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum Pair Generation in Nonlinear Metasurfaces with Mixed and Pure Photon Polarizations Noh, Jiho Santiago-Cruz, Tomás Sultanov, Vitaliy Doiron, Chloe F. Gennaro, Sylvain D. Chekhova, Maria V. Brener, Igal Quantum Physics Optics Metasurfaces are highly effective at manipulating classical light in the linear regime; however, effectively controlling the polarization of non-classical light generated from nonlinear resonant metasurfaces remains a challenge. Here, we present a solution by achieving polarization engineering of frequency-nondegenerate biphotons emitted via spontaneous parametric down-conversion (SPDC) in GaAs metasurfaces, where quasi-bound states in the continuum (qBIC) resonances were utilized for boosting the biphoton generation. By performing a comprehensive polarization tomography, we demonstrate that the polarization of the emitted photons directly reflects the qBIC mode's far-field properties. Furthermore, we show that both the type of qBIC mode and the symmetry of the meta-atoms can be tailored to control each single-photon polarization state, and that the subsequent two-photon polarization states are nearly separable, offering potential applications in the heralded generation of single photons with adjustable polarization. This work provides a significant step towards utilizing metasurfaces to not only generate quantum light but also engineer their polarization, a critical aspect for future quantum technologies. |
| title | Quantum Pair Generation in Nonlinear Metasurfaces with Mixed and Pure Photon Polarizations |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2409.04569 |