Weak Measurement and TSVF

Abstract

In this thesis, the article “Can a Future Choice Affect a Past Measurement’s Outcome?” is used as a starting point to explore the peculiar correlations between subsequent weak (i.e. non-projective) and strong measurements in a variation of the EPR-Bell experiment. Bell’s theorem states that particles may not possess predetermined values. However, as the outcomes of the subsequent weak and strong measurements do statistically agree, an apparent contridiction arises. The authors claim that the correlations between the results are best explained using the time-symmetric two-state vector formalism, stating that the experimenter’s future choice has been encrypted in the weak measurement’s outcomes. Alternative explanations are analyzed and a numerical simulation was made to invigorate the notion of a so called weak-bias. Meaning that the weak measurements sufficiently influence the particles’ states to account for the statistical agreement.