Protective measurements: Extracting the expectation value by measuring a single particle
- Piacentini F.
- Avella A.
- Rebufello E.
- Virzi S.
- Lussana R.
- Villa F.
- Tosi A.
- Gramegna M.
- Brida G.
- Cohen E.
- Vaidman L.
- Degiovanni I. P.
- Genovese M.
Publication date
January 2018
DOI Publisher
place:1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA Language
EnglishAbstract
In quantum mechanics, the eigenvalues and their corresponding probabilities specify the expectation value of a physical observable, which is known to be a statistical property related to large ensembles of particles. In contrast to this paradigm, we demonstrate a unique method allowing to extract the expectation value of a single particle, namely, the polarisation of a single protected photon, with a single experiment. This is the first realisation of quantum protective measurements
Add to ORKG