Unambiguous discrimination of general quantum operations
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arXiv
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
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| _version_ | 1866908559378219008 |
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| author | Cai, Weizhou Zhang, Jing-Ning Hua, Ziyue Wang, Weiting Pan, Xiaoxuan Liu, Xinyu Ma, Yuwei Hu, Ling Mu, Xianghao Wang, Haiyan Song, Yipu Zou, Chang-Ling Sun, Luyan |
| author_facet | Cai, Weizhou Zhang, Jing-Ning Hua, Ziyue Wang, Weiting Pan, Xiaoxuan Liu, Xinyu Ma, Yuwei Hu, Ling Mu, Xianghao Wang, Haiyan Song, Yipu Zou, Chang-Ling Sun, Luyan |
| contents | The discrimination of quantum operations has long been an intriguing challenge, with theoretical research significantly advancing our understanding of the quantum features in discriminating quantum objects. This challenge is closely related to the discrimination of quantum states, and proof-of-principle demonstrations of the latter have already been realized using optical photons. However, the experimental demonstration of discriminating general quantum operations, including both unitary and non-unitary operations, has remained elusive. In general quantum systems, especially those with high dimensions, the preparation of arbitrary quantum states and the implementation of arbitrary quantum operations and generalized measurements are non-trivial tasks. Here, for the first time, we experimentally demonstrate the optimal unambiguous discrimination of up to 6 displacement operators and the unambiguous discrimination of non-unitary quantum operations. Our results demonstrate powerful tools for experimental research in quantum information processing and are expected to stimulate a wide range of valuable applications in the field of quantum sensing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_13317 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Unambiguous discrimination of general quantum operations Cai, Weizhou Zhang, Jing-Ning Hua, Ziyue Wang, Weiting Pan, Xiaoxuan Liu, Xinyu Ma, Yuwei Hu, Ling Mu, Xianghao Wang, Haiyan Song, Yipu Zou, Chang-Ling Sun, Luyan Quantum Physics The discrimination of quantum operations has long been an intriguing challenge, with theoretical research significantly advancing our understanding of the quantum features in discriminating quantum objects. This challenge is closely related to the discrimination of quantum states, and proof-of-principle demonstrations of the latter have already been realized using optical photons. However, the experimental demonstration of discriminating general quantum operations, including both unitary and non-unitary operations, has remained elusive. In general quantum systems, especially those with high dimensions, the preparation of arbitrary quantum states and the implementation of arbitrary quantum operations and generalized measurements are non-trivial tasks. Here, for the first time, we experimentally demonstrate the optimal unambiguous discrimination of up to 6 displacement operators and the unambiguous discrimination of non-unitary quantum operations. Our results demonstrate powerful tools for experimental research in quantum information processing and are expected to stimulate a wide range of valuable applications in the field of quantum sensing. |
| title | Unambiguous discrimination of general quantum operations |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2404.13317 |