Preserving multi-level quantum coherence by dynamical decoupling
Quantum Physics
2022-12-29 v1
Abstract
Quantum information processing with multi-level systems (qudits) provides additional features and applications than the two-level systems. However, qudits are more prone to dephasing and dynamical decoupling for qudits has never been experimentally demonstrated. Here, as a proof-of-principle demonstration, we experimentally apply dynamical decoupling to protect superpositions with three levels of a trapped ion from ambient noisy magnetic field, prolonging coherence by up to approximately an order of magnitude. Our demonstration, straightforwardly scalable to more levels, may open up a path toward long coherence quantum memory, metrology and information processing with qudits.
Keywords
Cite
@article{arxiv.2203.00852,
title = {Preserving multi-level quantum coherence by dynamical decoupling},
author = {Xinxing Yuan and Yue Li and Mengxiang Zhang and Chang Liu and Mingdong Zhu and Xi Qin and Nikolay V. Vitanov and Yiheng Lin and Jiangfeng Du},
journal= {arXiv preprint arXiv:2203.00852},
year = {2022}
}
Comments
6 pages, 7 figures