A low-loss, 24-mode laser-written universal photonic processor in a glass-based platform
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arXiv
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| Autori principali: | , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866913965549813760 |
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| author | Barzaghi, Andrea Bénéfice, Maëlle Ceccarelli, Francesco Corrielli, Giacomo Galli, Valerio Gardina, Marco Grimaldi, Vittorio Kaczorowski, Jakub Malaspina, Francesco Osellame, Roberto Pentangelo, Ciro Rocchetto, Andrea Rudi, Alessandro |
| author_facet | Barzaghi, Andrea Bénéfice, Maëlle Ceccarelli, Francesco Corrielli, Giacomo Galli, Valerio Gardina, Marco Grimaldi, Vittorio Kaczorowski, Jakub Malaspina, Francesco Osellame, Roberto Pentangelo, Ciro Rocchetto, Andrea Rudi, Alessandro |
| contents | We report the fabrication of the first 24-mode universal photonic processor (UPP) realized through femtosecond laser writing (FLW), marking the most complex UPP demonstrated to date. Optimized for quantum dot emission at 925 nm, the device exhibits total insertion losses averaging only 4.35 dB, enabling its direct application in advanced multi-photon quantum experiments. Leveraging the versatility of FLW, we introduce suspended waveguides and precisely engineered 2D and 3D microstructures, significantly enhancing thermal isolation and minimizing power dissipation. As a result, our processor operates efficiently at less than 10 W, requiring only a simple thermo-electric cooler for stable thermal management. The device exhibits exceptional performance after calibration, implementing Haar-random unitary transformations with an amplitude fidelity of 99.7 %. This work establishes FLW-based integrated photonics as a scalable and robust platform for advancing quantum computing, communication, and sensing technologies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_01609 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A low-loss, 24-mode laser-written universal photonic processor in a glass-based platform Barzaghi, Andrea Bénéfice, Maëlle Ceccarelli, Francesco Corrielli, Giacomo Galli, Valerio Gardina, Marco Grimaldi, Vittorio Kaczorowski, Jakub Malaspina, Francesco Osellame, Roberto Pentangelo, Ciro Rocchetto, Andrea Rudi, Alessandro Quantum Physics Applied Physics Optics We report the fabrication of the first 24-mode universal photonic processor (UPP) realized through femtosecond laser writing (FLW), marking the most complex UPP demonstrated to date. Optimized for quantum dot emission at 925 nm, the device exhibits total insertion losses averaging only 4.35 dB, enabling its direct application in advanced multi-photon quantum experiments. Leveraging the versatility of FLW, we introduce suspended waveguides and precisely engineered 2D and 3D microstructures, significantly enhancing thermal isolation and minimizing power dissipation. As a result, our processor operates efficiently at less than 10 W, requiring only a simple thermo-electric cooler for stable thermal management. The device exhibits exceptional performance after calibration, implementing Haar-random unitary transformations with an amplitude fidelity of 99.7 %. This work establishes FLW-based integrated photonics as a scalable and robust platform for advancing quantum computing, communication, and sensing technologies. |
| title | A low-loss, 24-mode laser-written universal photonic processor in a glass-based platform |
| topic | Quantum Physics Applied Physics Optics |
| url | https://arxiv.org/abs/2505.01609 |