A robust approach for time-bin encoded photonic quantum information protocols
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arXiv
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| Autores principales: | , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866910189792264192 |
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| author | White, Simon J. U. Polino, Emanuele Ghafari, Farzad Joch, Dominick J. Villegas-Aguilar, Luis Shalm, Lynden K. Verma, Varun B. Huber, Marcus Tischler, Nora |
| author_facet | White, Simon J. U. Polino, Emanuele Ghafari, Farzad Joch, Dominick J. Villegas-Aguilar, Luis Shalm, Lynden K. Verma, Varun B. Huber, Marcus Tischler, Nora |
| contents | Quantum states encoded in the time-bin degree of freedom of photons represent a fundamental resource for quantum information protocols. Traditional methods for generating and measuring time-bin encoded quantum states face severe challenges due to optical instabilities, complex setups, and timing resolution requirements. To circumvent these issues, we leverage an approach based on Hong-Ou-Mandel interference and we propose and demonstrate a robust and scalable protocol to generate and measure arbitrary high-dimensional time-bin quantum states. We experimentally implement the protocol in a photonic setup reaching high-fidelity quantum state tomographies of two and three-dimensional quantum states encoded in time-bins with short temporal separation. We also certify intrasystem polarization-time entanglement of single photons through a nonclassicality test. The demonstrated approach enables access to high-dimensional states and tasks that are practically inaccessible with standard schemes, thereby advancing fundamental quantum information science and opening applications in quantum communication. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_16106 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A robust approach for time-bin encoded photonic quantum information protocols White, Simon J. U. Polino, Emanuele Ghafari, Farzad Joch, Dominick J. Villegas-Aguilar, Luis Shalm, Lynden K. Verma, Varun B. Huber, Marcus Tischler, Nora Quantum Physics Quantum states encoded in the time-bin degree of freedom of photons represent a fundamental resource for quantum information protocols. Traditional methods for generating and measuring time-bin encoded quantum states face severe challenges due to optical instabilities, complex setups, and timing resolution requirements. To circumvent these issues, we leverage an approach based on Hong-Ou-Mandel interference and we propose and demonstrate a robust and scalable protocol to generate and measure arbitrary high-dimensional time-bin quantum states. We experimentally implement the protocol in a photonic setup reaching high-fidelity quantum state tomographies of two and three-dimensional quantum states encoded in time-bins with short temporal separation. We also certify intrasystem polarization-time entanglement of single photons through a nonclassicality test. The demonstrated approach enables access to high-dimensional states and tasks that are practically inaccessible with standard schemes, thereby advancing fundamental quantum information science and opening applications in quantum communication. |
| title | A robust approach for time-bin encoded photonic quantum information protocols |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2404.16106 |