Matches in SemOpenAlex for { <https://semopenalex.org/work/W4308481719> ?p ?o ?g. }
- W4308481719 abstract "By choosing more orthogonality between preselection and postselection states, one can significantly improve the sensitivity in general optical quantum metrology based on the weak-value amplification (WVA) approach. However, increasing the orthogonality decreases the probability of detecting photons and makes the weak measurement difficult, especially when the weak measurement is disturbed by strong noise and the pointer is drowned in noise with a negative-decibel signal-to-noise ratio (SNR). In this article we introduce and numerically evaluate a modified weak-measurement protocol with a temporal pointer, namely, the autocorrelative weak-value amplification (AWVA) approach. Specifically, a small longitudinal time delay (tiny phase shift) $ensuremath{tau}$ of a Gaussian pulse is measured by implementing two simultaneous autocorrelative weak measurements under Gaussian white noise with different SNRs. The small quantities $ensuremath{tau}$ are obtained by measuring the autocorrelation coefficient of the pulses instead of fitting the shift of the mean value of the probe in the standard WVA technique. Simulation results show that the AWVA approach outperforms the standard WVA technique in the time domain with smaller statistical errors, remarkably increasing the precision of weak measurement under a strong noise background." @default.
- W4308481719 created "2022-11-12" @default.
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- W4308481719 date "2022-11-03" @default.
- W4308481719 modified "2023-10-04" @default.
- W4308481719 title "Autocorrelative weak-value amplification and simulating the protocol under strong Gaussian noise" @default.
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- W4308481719 doi "https://doi.org/10.1103/physreva.106.053704" @default.
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