Entanglement swapping systems toward a quantum internet
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866913974891577344 |
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| author | Davis, Samantha I. Valivarthi, Raju Cameron, Andrew Pena, Cristian Xie, Si Narvaez, Lautaro Lauk, Nikolai Li, Chang Taylor, Kelsie Youssef, Rahaf Wang, Christina Kapoor, Keshav Korzh, Boris Sinclair, Neil Shaw, Matthew Spentzouris, Panagiotis Spiropulu, Maria |
| author_facet | Davis, Samantha I. Valivarthi, Raju Cameron, Andrew Pena, Cristian Xie, Si Narvaez, Lautaro Lauk, Nikolai Li, Chang Taylor, Kelsie Youssef, Rahaf Wang, Christina Kapoor, Keshav Korzh, Boris Sinclair, Neil Shaw, Matthew Spentzouris, Panagiotis Spiropulu, Maria |
| contents | We demonstrate conditional entanglement swapping, i.e. teleportation of entanglement, between time-bin qubits at the telecommunication wavelength of 1536.4 nm with high fidelity of 87\%. Our system is deployable, utilizing modular, off-the-shelf, fiber-coupled, and electrically controlled components such as electro-optic modulators. It leverages the precise timing resolution of superconducting nanowire detectors, which are controlled and read out via a custom developed graphical user interface. The swapping process is described, interpreted, and guided using characteristic function-based analytical modeling that accounts for realistic imperfections. Our system supports quantum networking protocols, including source-independent quantum key distribution, with an estimated secret key rate of approximately 0.5 bits per sifted bit. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_18906 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Entanglement swapping systems toward a quantum internet Davis, Samantha I. Valivarthi, Raju Cameron, Andrew Pena, Cristian Xie, Si Narvaez, Lautaro Lauk, Nikolai Li, Chang Taylor, Kelsie Youssef, Rahaf Wang, Christina Kapoor, Keshav Korzh, Boris Sinclair, Neil Shaw, Matthew Spentzouris, Panagiotis Spiropulu, Maria Quantum Physics We demonstrate conditional entanglement swapping, i.e. teleportation of entanglement, between time-bin qubits at the telecommunication wavelength of 1536.4 nm with high fidelity of 87\%. Our system is deployable, utilizing modular, off-the-shelf, fiber-coupled, and electrically controlled components such as electro-optic modulators. It leverages the precise timing resolution of superconducting nanowire detectors, which are controlled and read out via a custom developed graphical user interface. The swapping process is described, interpreted, and guided using characteristic function-based analytical modeling that accounts for realistic imperfections. Our system supports quantum networking protocols, including source-independent quantum key distribution, with an estimated secret key rate of approximately 0.5 bits per sifted bit. |
| title | Entanglement swapping systems toward a quantum internet |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2503.18906 |