Self-guided tomography of time-frequency qudits
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866912221164994560 |
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| author | Serino, Laura Rambach, Markus Brecht, Benjamin Romero, Jacquiline Silberhorn, Christine |
| author_facet | Serino, Laura Rambach, Markus Brecht, Benjamin Romero, Jacquiline Silberhorn, Christine |
| contents | High-dimensional time-frequency encodings have the potential to significantly advance quantum information science; however, practical applications require precise knowledge of the encoded quantum states, which becomes increasingly challenging for larger Hilbert spaces. Self-guided tomography (SGT) has emerged as a practical and scalable technique for this purpose in the spatial domain. Here, we apply SGT to estimate time-frequency states using a multi-output quantum pulse gate. We achieve fidelities of more than 99\% for 3- and 5-dimensional states without the need for calibration or post-processing. We demonstrate the robustness of SGT against statistical and environmental noise, highlighting its efficacy in the photon-starved regime typical of quantum information applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_19277 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Self-guided tomography of time-frequency qudits Serino, Laura Rambach, Markus Brecht, Benjamin Romero, Jacquiline Silberhorn, Christine Quantum Physics High-dimensional time-frequency encodings have the potential to significantly advance quantum information science; however, practical applications require precise knowledge of the encoded quantum states, which becomes increasingly challenging for larger Hilbert spaces. Self-guided tomography (SGT) has emerged as a practical and scalable technique for this purpose in the spatial domain. Here, we apply SGT to estimate time-frequency states using a multi-output quantum pulse gate. We achieve fidelities of more than 99\% for 3- and 5-dimensional states without the need for calibration or post-processing. We demonstrate the robustness of SGT against statistical and environmental noise, highlighting its efficacy in the photon-starved regime typical of quantum information applications. |
| title | Self-guided tomography of time-frequency qudits |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2411.19277 |