Quantum weak-interaction-based measurement: From sequential weak measurement to protective measurement

Enrico Rebufello, Salvatore Virzì, Fabrizio Piacentini, Alessio Avella, Franco Zappa, Rudi Lussana, Federica Villa, Alberto Tosi, Marco Gramegna, Giorgio Brida, Eliahu Cohen, Marco Barbieri, Ivo Pietro Degiovanni, Marco Genovese

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Weak value measurements have been a real breakthrough in the quantum measurement framework. In particular, quantum measurements may take advantage by anomalous weak values, i.e. values out of the eigenvalues spectrum of the measured observable, both for implementing new measurement techniques and studying Quantum Mechanics foundations. In this report we show three experiments with single photons presenting anomalous weak values: the first one tests the incompatibility between quantum mechanics and noncontextual hidden variables theories, the second one is the first realization of a sequential weak value evaluation of two incompatible observables on the same photon, and the last one shows how sequential weak values can be used to test Leggett-Garg inequalities extended to multiple-measurements scenarios.

Original languageEnglish
Title of host publicationQuantum Communications and Quantum Imaging XVI
EditorsRonald E. Meyers, Yanhua Shih, Keith S. Deacon
ISBN (Electronic)9781510621138
StatePublished - 2018
Externally publishedYes
EventQuantum Communications and Quantum Imaging XVI 2018 - San Diego, United States
Duration: 19 Aug 201820 Aug 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceQuantum Communications and Quantum Imaging XVI 2018
Country/TerritoryUnited States
CitySan Diego

Bibliographical note

Publisher Copyright:
© 2018 SPIE.


  • quantum optics
  • weak measurements
  • weak values


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