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High-precision multiparameter weak measurement with Hermite-Gaussian pointer
Physical Review Applied ( IF 4.194 ) Pub Date : 
Binke Xia, Jingzheng Huang, Chen Fang, Hongjing Li, and Guihua Zeng

The weak value amplification technique has been proved useful for precision metrology in both theory and experiment. To explore the ultimate performance of weak value amplification for multi-parameter estimation, we investigate a general weak measurement formalism with assistance of high-order Hermite-Gaussian pointer and quantum Fisher information matrix. Theoretical analysis shows that the ultimate precision of our scheme is improved by a factor of square root of 2n+1, where n is the order of Hermite-Gaussian mode. Moreover, the parameters’ estimation precision can approach the precision limit with maximum likelihood estimation method and homodyne method. We have also given a proof-of-principle experimental setup to validate the H-G pointer theory and explore its potential applications in precision metrology.
更新日期:2020-01-09

 

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