Observation of freezing phenomenon in high-dimensional quantum correlation dynamics
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866910682155319296 |
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| author | Fu, Yue Liu, Wenquan Wang, Yunhan Duan, Chang-Kui Zhang, Bo Wang, Yeliang Rong, Xing |
| author_facet | Fu, Yue Liu, Wenquan Wang, Yunhan Duan, Chang-Kui Zhang, Bo Wang, Yeliang Rong, Xing |
| contents | Quantum information processing (QIP) based on high-dimensional quantum systems provides unique advantages and new potentials where high-dimensional quantum correlations (QCs) play vital roles. Exploring the resistance of QCs against noises is crucial as QCs are fragile due to complex and unavoidable system-environment interactions. In this study, we investigate the performance of high-dimensional QCs under local dephasing noise using a single nitrogen-vacancy center in diamond. A freezing phenomenon in the high-dimensional quantum discord dynamics was observed, showing discord is robust against local dephasing noise. Utilizing a robustness metric known as freezing index, we found that the discord of qutrits outperforms their qubits counterpart when confronted with dephasing noise. Furthermore, we developed a geometric picture to explain this intriguing freezing phenomenon phenomenon. Our findings highlight the potential of utilizing discord as a physical resource for advancing QIP in high-dimensional quantum settings. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_01538 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Observation of freezing phenomenon in high-dimensional quantum correlation dynamics Fu, Yue Liu, Wenquan Wang, Yunhan Duan, Chang-Kui Zhang, Bo Wang, Yeliang Rong, Xing Quantum Physics Quantum information processing (QIP) based on high-dimensional quantum systems provides unique advantages and new potentials where high-dimensional quantum correlations (QCs) play vital roles. Exploring the resistance of QCs against noises is crucial as QCs are fragile due to complex and unavoidable system-environment interactions. In this study, we investigate the performance of high-dimensional QCs under local dephasing noise using a single nitrogen-vacancy center in diamond. A freezing phenomenon in the high-dimensional quantum discord dynamics was observed, showing discord is robust against local dephasing noise. Utilizing a robustness metric known as freezing index, we found that the discord of qutrits outperforms their qubits counterpart when confronted with dephasing noise. Furthermore, we developed a geometric picture to explain this intriguing freezing phenomenon phenomenon. Our findings highlight the potential of utilizing discord as a physical resource for advancing QIP in high-dimensional quantum settings. |
| title | Observation of freezing phenomenon in high-dimensional quantum correlation dynamics |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2411.01538 |