首页|Enhanced measurement precision with continuous interrogation during dynamical decoupling

Enhanced measurement precision with continuous interrogation during dynamical decoupling

扫码查看
原文链接
  • 万方数据
  • 维普
Dynamical decoupling(DD)is normally ineffective when applied to DC measurement.In its straightforward im-plementation,DD nulls out DC signal as well while suppressing noise.This work proposes a phase relay method that is capable of continuously interrogating the DC signal over many DD cycles.We illustrate its efficacy when applied to the measurement of a weak DC magnetic field with an atomic spinor Bose-Einstein condensate.Sensitivities approaching standard quantum limit or Heisenberg limit are potentially realizable for a coherent spin state or a squeezed spin state of 10000 atoms,respectively,while ambient laboratory level noise is suppressed by DD.Our work offers a practical approach to mitigate the limitations of DD to DC measurement and would find other applications for resorting coherence in quantum sensing and quantum information processing research.

quantum sensingcontinuous interrogationquantum magnetometerdynamical decouplingHeisenberg limit

张军、杜鹏、敬雷、徐鹏、尤力、张文献

展开 >

Key Laboratory of Artificial Micro-and Nano-structures of Ministry of Education,and School of Physics and Technology,Wuhan University,Wuhan 430072,China

State Key Laboratory of Low-Dimensional Quantum Physics,Department of Physics,Tsinghua University,Beijing 100084,China

Wuhan Institute of Quantum Technology,Wuhan 430206,China

国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金国家重点研发计划Innovation Program for Quantum Science and Technology

U19302011227433191836101918363022018YFA03065042021ZD0302100

2024

10.1088/1674-1056/ad1985

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(3)
  • 57