Anomalous weak values via a single photon detection.

ABSTRACT: Is it possible that a measurement of a spin component of a spin-1/2 particle yields the value 100? In 1988 Aharonov, Albert and Vaidman argued that upon pre- and postselection of particular spin states, weakening the coupling of a standard measurement procedure ensures this paradoxical result¹. This theoretical prediction, called weak value, was realised in numerous experiments^2-9, but its meaning remains very controversial^10-19, since its "anomalous" nature, i.e., the possibility to exceed the eigenvalue spectrum, as well as its "quantumness" are debated^20-22. We address these questions by presenting the first experiment measuring anomalous weak values with just a single click, without the need for statistical averaging. The measurement uncertai

SUBMITTER: Rebufello E 

PROVIDER: S-EPMC8149841 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature