Observation of freezing phenomenon in high-dimensional quantum correlation dynamics
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.
Keywords
Cite
@article{arxiv.2411.01538,
title = {Observation of freezing phenomenon in high-dimensional quantum correlation dynamics},
author = {Yue Fu and Wenquan Liu and Yunhan Wang and Chang-Kui Duan and Bo Zhang and Yeliang Wang and Xing Rong},
journal= {arXiv preprint arXiv:2411.01538},
year = {2024}
}