典型文献
Beating standard quantum limit via two-axis magnetic susceptibility measurement
文献摘要：
We report a metrology scheme which measures the magnetic susceptibility of an atomic spin ensemble along the x and z directions and produces parameter estimation with precision beating the standard quantum limit.The atomic ensemble is initialized via one-axis spin squeezing with optimized squeezing time and parameter φ(to be estimated)as-sumed as uniformly distributed between 0 and 2π while fixed in each estimation.One estimation of φ can be produced with every two magnetic susceptibility data measured along the two axes respectively,which has an imprecision scaling(1.43±0.02)/N0.687±0.003 with respect to the number N of the atomic spins.The measurement scheme is easy to imple-ment and is robust against the measurement fluctuation caused by environment noise and measurement defects.
文献关键词：
中图分类号：
作者姓名：
Zheng-An Wang;Yi Peng;Dapeng Yu;Heng Fan
作者机构：
Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100190,China;Shenzhen Insititute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China;Guangdong Provincial Key Laboratory of Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China;Shenzhen Key Laboratory of Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China;CAS Center for Excellence in Topological Quantum Computation,University of Chinese Academy of Sciences,Beijing 100190,China;Songshan Lake Materials Laboratory,Dongguan 523808,China
文献出处：
引用格式：
[1]Zheng-An Wang;Yi Peng;Dapeng Yu;Heng Fan-.Beating standard quantum limit via two-axis magnetic susceptibility measurement)[J].中国物理B（英文版）,2022(04):191-195
A类：
Beating
B类：
standard,quantum,limit,via,two,axis,magnetic,susceptibility,measurement,We,report,metrology,scheme,which,measures,atomic,ensemble,along,directions,produces,parameter,estimation,beating,initialized,one,squeezing,optimized,estimated,sumed,uniformly,distributed,between,while,fixed,each,One,can,produced,every,data,measured,axes,respectively,has,imprecision,scaling,N0,number,spins,easy,imple,robust,against,fluctuation,caused,by,environment,noise,defects
AB值：
0.551705
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