A Universal Quantum Information Preserving Photonic Switch for Scalable Quantum Networks
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arXiv
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| Format: | Preprint |
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2026
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| author | Zhao, Jiapeng Vinet, Stéphane Minoofar, Amir Kilzer, Michael Wang, Lucas Moody, Galan Pandey, Vijoy Kompella, Ramana Nejabati, Reza |
| author_facet | Zhao, Jiapeng Vinet, Stéphane Minoofar, Amir Kilzer, Michael Wang, Lucas Moody, Galan Pandey, Vijoy Kompella, Ramana Nejabati, Reza |
| contents | Quantum networks are a keystone of the quantum internet. However, existing implementations remain largely confined to static point-to-point links due to the absence of a switching paradigm capable of dynamically routing fragile quantum entanglement without introducing decoherence. Here, we propose the Universal Quantum Switch, a foundational building block allowing on-demand, non-blocking, and encoding-agnostic routing of quantum information, as well as seamless modality conversion between disparate quantum platforms. We develop a prototype in thin-film lithium niobate and experimentally demonstrate robust switching with $\le 4\%$ decoherence via thermo-optic modulation and high-speed electro-optic switching of arbitrary entangled states at 1 MHz. Moreover, we show that our platform can support reconfiguration speeds up to 1 GHz. To our knowledge, this work represents the first demonstration of multi-node dynamic entanglement distribution at these speeds. Complementing these experimental results, we project the architecture's scalability, showing dimension-independent decoherence, and provide a scalable, interoperable building block for heterogeneous quantum network fabrics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_21902 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A Universal Quantum Information Preserving Photonic Switch for Scalable Quantum Networks Zhao, Jiapeng Vinet, Stéphane Minoofar, Amir Kilzer, Michael Wang, Lucas Moody, Galan Pandey, Vijoy Kompella, Ramana Nejabati, Reza Quantum Physics Optics Quantum networks are a keystone of the quantum internet. However, existing implementations remain largely confined to static point-to-point links due to the absence of a switching paradigm capable of dynamically routing fragile quantum entanglement without introducing decoherence. Here, we propose the Universal Quantum Switch, a foundational building block allowing on-demand, non-blocking, and encoding-agnostic routing of quantum information, as well as seamless modality conversion between disparate quantum platforms. We develop a prototype in thin-film lithium niobate and experimentally demonstrate robust switching with $\le 4\%$ decoherence via thermo-optic modulation and high-speed electro-optic switching of arbitrary entangled states at 1 MHz. Moreover, we show that our platform can support reconfiguration speeds up to 1 GHz. To our knowledge, this work represents the first demonstration of multi-node dynamic entanglement distribution at these speeds. Complementing these experimental results, we project the architecture's scalability, showing dimension-independent decoherence, and provide a scalable, interoperable building block for heterogeneous quantum network fabrics. |
| title | A Universal Quantum Information Preserving Photonic Switch for Scalable Quantum Networks |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2604.21902 |