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arXiv · 1803.03075

Probing the collective dynamics of nuclear spin bath in a rare-earth ion doped crystal

Zong-Quan Zhou·Yu Ma·Tao Tu·Pei-Yun Li·Zong-Feng Li·Chao Liu·Peng-Jun Liang·Xiao Liu·Yi-Lin Hua·Tian-Shu Yang·Jun Hu·Xue Li·Yi-Xin Xiao·Yong-Jian Han·Chuan-Feng Li·Guang-Can Guo
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Abstract

Probing collective spin dynamics is a current challenge in the field of magnetic resonance spectroscopy and has important applications in material analysis and quantum information protocols. Recently, the rare-earth ion doped crystals are an attractive candidate for making long-lived quantum memory. Further enhancement of its performance would benefit from the direct knowledge on the dynamics of nuclear-spin bath in the crystal. Here we detect the collective dynamics of nuclear-spin bath located around the rare-earth ions in a crystal using dynamical decoupling spectroscopy method. From the measured spectrum, we analyze the configuration of the spin bath and characterize the flip-flop time between two correlated nuclear spins in a long time scale ($\sim $1s). Furthermore, we experimentally demonstrate that the rare-earth ions can serve as a magnetic quantum sensor for external magnetic field. These results suggest that the rare-earth ion is a useful probe for complex spin dynamics in solids and enable quantum sensing in the low-frequency regime, revealing promising possibilities for applications in diverse fields.

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Zong-Quan Zhou, Yu Ma, Tao Tu, Pei-Yun Li, Zong-Feng Li, Chao Liu, Peng-Jun Liang, Xiao Liu, Yi-Lin Hua, Tian-Shu Yang, Jun Hu, Xue Li, Yi-Xin Xiao, Yong-Jian Han, Chuan-Feng Li, Guang-Can Guo. 2018-03-08. Probing the collective dynamics of nuclear spin bath in a rare-earth ion doped crystal. https://arxiv.org/abs/1803.03075

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