Can Anomalous Amplification be Attained without Postselection?

  title={Can Anomalous Amplification be Attained without Postselection?},
  author={Juli{\'a}n Mart{\'i}nez-Rinc{\'o}n and Wei-Tao Liu and Gerardo Ivan Viza and John C. Howell},
  journal={Physical review letters},
  volume={116 10},
We present a parameter estimation technique based on performing joint measurements of a weak interaction away from the weak-value-amplification approximation. Two detectors are used to collect full statistics of the correlations between two weakly entangled degrees of freedom. Without discarding of data, the protocol resembles the anomalous amplification of an imaginary-weak-value-like response. The amplification is induced in the difference signal of both detectors allowing robustness to… CONTINUE READING
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