Certifying high-dimensional quantum channels
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arXiv
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866918158872346624 |
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| author | Engineer, Sophie Goel, Suraj Egelhaaf, Sophie McCutcheon, Will Srivastav, Vatshal Leedumrongwatthanakun, Saroch Wollmann, Sabine Jones, Ben Cope, Thomas Brunner, Nicolas Uola, Roope Malik, Mehul |
| author_facet | Engineer, Sophie Goel, Suraj Egelhaaf, Sophie McCutcheon, Will Srivastav, Vatshal Leedumrongwatthanakun, Saroch Wollmann, Sabine Jones, Ben Cope, Thomas Brunner, Nicolas Uola, Roope Malik, Mehul |
| contents | The use of high-dimensional systems for quantum communication opens interesting perspectives, such as increased information capacity and noise resilience. In this context, it is crucial to certify that a given quantum channel can reliably transmit high-dimensional quantum information. Here we develop efficient methods for the characterization of high-dimensional quantum channels. We first present a notion of dimensionality of quantum channels, and develop efficient certification methods for this quantity. We consider a simple prepare-and-measure setup, and provide witnesses for both a fully and a partially trusted scenario. In turn we apply these methods to a photonic experiment and certify dimensionalities up to 59 for a commercial graded-index multi-mode optical fiber. Moreover, we present extensive numerical simulations of the experiment, providing an accurate noise model for the fiber and exploring the potential of more sophisticated witnesses. Our work demonstrates the efficient characterization of high-dimensional quantum channels, a key ingredient for future quantum communication technologies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_15880 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Certifying high-dimensional quantum channels Engineer, Sophie Goel, Suraj Egelhaaf, Sophie McCutcheon, Will Srivastav, Vatshal Leedumrongwatthanakun, Saroch Wollmann, Sabine Jones, Ben Cope, Thomas Brunner, Nicolas Uola, Roope Malik, Mehul Quantum Physics The use of high-dimensional systems for quantum communication opens interesting perspectives, such as increased information capacity and noise resilience. In this context, it is crucial to certify that a given quantum channel can reliably transmit high-dimensional quantum information. Here we develop efficient methods for the characterization of high-dimensional quantum channels. We first present a notion of dimensionality of quantum channels, and develop efficient certification methods for this quantity. We consider a simple prepare-and-measure setup, and provide witnesses for both a fully and a partially trusted scenario. In turn we apply these methods to a photonic experiment and certify dimensionalities up to 59 for a commercial graded-index multi-mode optical fiber. Moreover, we present extensive numerical simulations of the experiment, providing an accurate noise model for the fiber and exploring the potential of more sophisticated witnesses. Our work demonstrates the efficient characterization of high-dimensional quantum channels, a key ingredient for future quantum communication technologies. |
| title | Certifying high-dimensional quantum channels |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2408.15880 |