Two-parameter estimation with three-mode NOON state in a symmetric triple-well potential  

作　　者：Fei Yao Yi-Mu Du Haijun Xing Libin Fu 

机构地区：[1]Graduate School of China Academy of Engineering Physics,Beijing 100193,China

出　　处：《Communications in Theoretical Physics》2022年第4期52-60,共9页理论物理通讯（英文版）

基　　金：supported by the National Natural Science Foundation of China(NSFC)(Grant Nos.12088101,11725417,and U1930403);Science Challenge Project(Grant No.TZ2018005)。

摘　　要：We propose a scheme to realize two-parameter estimation via Bose–Einstein condensates confined in a symmetric triple-well potential.The three-mode NOON state is prepared adiabatically as the initial state.The two parameters to be estimated are the phase differences between the wells.The sensitivity of this estimation scheme is studied by comparing quantum and classical Fisher information matrices.As a result,we find an optimal particle number measurement method.Moreover,the precision of this estimation scheme means that the Heisenberg scaling behaves under the optimal measurement.

关 键 词：multi-parameter estimation Heisenberg scaling precision three-mode NOON state symmetric triple-well potential 

分 类 号：O413[理学—理论物理] O212.1[理学—物理]