Compact system development of efficient quantum-entangled photon sources towards deployable and industrial devices
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866912998742818816 |
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| author | Zena, Yared G. Langer, Moritz Rahimi, Ahmad Dhurjati, Abhishikth Ruchka, Pavel Jakovljevic, Sara Pal, Mandira Fitzek, Frank H. P. Giessen, Harald Czarske, Juergen Bassoli, Riccardo Hopfmann, Caspar |
| author_facet | Zena, Yared G. Langer, Moritz Rahimi, Ahmad Dhurjati, Abhishikth Ruchka, Pavel Jakovljevic, Sara Pal, Mandira Fitzek, Frank H. P. Giessen, Harald Czarske, Juergen Bassoli, Riccardo Hopfmann, Caspar |
| contents | Entangled photon pair sources are a key enabling technology for quantum communication and networking, yet their deployment beyond laboratory environments is hindered by system-level complexity, limited operational stability, and insufficient industry compatibility. Here, we demonstrate a rack-based, mobile quantum light source architecture based on a semiconductor quantum dot emitter that directly addresses these challenges through modular system integration and automated operation. The source generates polarization-entangled photon pairs with an entanglement negativity 2n of up to $0.98(1)$, confirming near-maximal entanglement quality. In continuous, hands-off operation over a six-hour time window, the system achieves an average single-photon emission rate of $697(8)$ kHz and a maximum rate of $740(7)$ kHz, while maintaining 2n-value of more than $95$ $\%$. These results are enabled by the integration of optical excitation, collection, cryogenic operation, and control electronics within a standardized rack footprint, together with automated monitoring. By demonstrating simultaneously high entanglement quality, sustained brightness, and long-term operational stability in an industry-aligned system architecture, this work advances semiconductor quantum dot sources toward deployable entangled photon sources for applied quantum photonics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_02024 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Compact system development of efficient quantum-entangled photon sources towards deployable and industrial devices Zena, Yared G. Langer, Moritz Rahimi, Ahmad Dhurjati, Abhishikth Ruchka, Pavel Jakovljevic, Sara Pal, Mandira Fitzek, Frank H. P. Giessen, Harald Czarske, Juergen Bassoli, Riccardo Hopfmann, Caspar Quantum Physics Mesoscale and Nanoscale Physics Entangled photon pair sources are a key enabling technology for quantum communication and networking, yet their deployment beyond laboratory environments is hindered by system-level complexity, limited operational stability, and insufficient industry compatibility. Here, we demonstrate a rack-based, mobile quantum light source architecture based on a semiconductor quantum dot emitter that directly addresses these challenges through modular system integration and automated operation. The source generates polarization-entangled photon pairs with an entanglement negativity 2n of up to $0.98(1)$, confirming near-maximal entanglement quality. In continuous, hands-off operation over a six-hour time window, the system achieves an average single-photon emission rate of $697(8)$ kHz and a maximum rate of $740(7)$ kHz, while maintaining 2n-value of more than $95$ $\%$. These results are enabled by the integration of optical excitation, collection, cryogenic operation, and control electronics within a standardized rack footprint, together with automated monitoring. By demonstrating simultaneously high entanglement quality, sustained brightness, and long-term operational stability in an industry-aligned system architecture, this work advances semiconductor quantum dot sources toward deployable entangled photon sources for applied quantum photonics. |
| title | Compact system development of efficient quantum-entangled photon sources towards deployable and industrial devices |
| topic | Quantum Physics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2604.02024 |