Rubidium-Doped KTiOPO$_4$ Waveguides as a Dual-Type Photon Pair Source
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866916866430074880 |
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| author | Hendra, Patrick León-Torres, Josué R. Gili, Valerio Flavio Gräfe, Markus |
| author_facet | Hendra, Patrick León-Torres, Josué R. Gili, Valerio Flavio Gräfe, Markus |
| contents | We investigate the dual generation of type-0 and type-II spontaneous parametric down conversions (SPDCs) within a single periodically poled rubidium-doped KTiOPO$_4$ (PPRKTP) waveguide. By coupling a 45 degree linearly polarized pump laser into the waveguide, both SPDC processes are concurrently excited: the type-0 SPDC process is facilitated via third-order quasi-phase matching (QPM) utilizing the nonlinear coefficient $d_{33}$ , while the type-II SPDC process employs first-order QPM with the nonlinear coefficient $d_{24}$. This dual-SPDC scheme holds potential for applications in quantum communication protocols targeting the telecommunication wavelength. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_14269 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Rubidium-Doped KTiOPO$_4$ Waveguides as a Dual-Type Photon Pair Source Hendra, Patrick León-Torres, Josué R. Gili, Valerio Flavio Gräfe, Markus Quantum Physics Optics We investigate the dual generation of type-0 and type-II spontaneous parametric down conversions (SPDCs) within a single periodically poled rubidium-doped KTiOPO$_4$ (PPRKTP) waveguide. By coupling a 45 degree linearly polarized pump laser into the waveguide, both SPDC processes are concurrently excited: the type-0 SPDC process is facilitated via third-order quasi-phase matching (QPM) utilizing the nonlinear coefficient $d_{33}$ , while the type-II SPDC process employs first-order QPM with the nonlinear coefficient $d_{24}$. This dual-SPDC scheme holds potential for applications in quantum communication protocols targeting the telecommunication wavelength. |
| title | Rubidium-Doped KTiOPO$_4$ Waveguides as a Dual-Type Photon Pair Source |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2505.14269 |