Observation of freezing phenomenon in high-dimensional quantum correlation dynamics

• URL: http://arxiv.org/abs/2411.01538v1
• Date: Sun, 03 Nov 2024 12:01:10 GMT
• Title: Observation of freezing phenomenon in high-dimensional quantum correlation dynamics
• Authors: Yue Fu, Wenquan Liu, Yunhan Wang, Chang-Kui Duan, Bo Zhang, Yeliang Wang, Xing Rong,
• Abstract summary: 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.
• Score: 3.0950472962580284
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: 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.

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