Broadband Spontaneous Parametric Downconversion in Reconfigurable Poled Linearly-Uncoupled Resonators
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866913405578772480 |
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| author | Stefano, Alessia Zatti, Luca Liscidini, Marco |
| author_facet | Stefano, Alessia Zatti, Luca Liscidini, Marco |
| contents | In this letter, we study spontaneous parametric down-conversion (SPDC) in a periodically poled structure composed of two linearly uncoupled resonators that are nonlinearly coupled via a Mach-Zehnder interferometer. The device does not require dispersion engineering to achieve efficient doubly-resonant SPDC and, unlike the case of a single resonator, one can reconfigure the system to generate photon pairs over a bandwidth of hundreds of nm. We consider the case of SPDC pumped at 775 nm in a periodically poled lithium-niobate (PPLN) device compatible with up-to-date technological platforms. We demonstrate pair generation rates of up to 250 MHz/mW pump power for a single resonance and integrated pair generation rates of up to 100 THz/mW pump power over 170 nm. When properly reconfigured, a single device can efficiently generate over a bandwidth of some 300 nm, covering the S, C, L, and U infrared bands. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_18196 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Broadband Spontaneous Parametric Downconversion in Reconfigurable Poled Linearly-Uncoupled Resonators Stefano, Alessia Zatti, Luca Liscidini, Marco Optics In this letter, we study spontaneous parametric down-conversion (SPDC) in a periodically poled structure composed of two linearly uncoupled resonators that are nonlinearly coupled via a Mach-Zehnder interferometer. The device does not require dispersion engineering to achieve efficient doubly-resonant SPDC and, unlike the case of a single resonator, one can reconfigure the system to generate photon pairs over a bandwidth of hundreds of nm. We consider the case of SPDC pumped at 775 nm in a periodically poled lithium-niobate (PPLN) device compatible with up-to-date technological platforms. We demonstrate pair generation rates of up to 250 MHz/mW pump power for a single resonance and integrated pair generation rates of up to 100 THz/mW pump power over 170 nm. When properly reconfigured, a single device can efficiently generate over a bandwidth of some 300 nm, covering the S, C, L, and U infrared bands. |
| title | Broadband Spontaneous Parametric Downconversion in Reconfigurable Poled Linearly-Uncoupled Resonators |
| topic | Optics |
| url | https://arxiv.org/abs/2406.18196 |