The Signature of Quantum Physics

Fabio Antonio  BOVINO

Quantum Optics Lab Selex-ES Finmeccanica

Venerdì 29 Novembre 2013 - ore 15:00

AULA SEMINARI- Dip. Scienze di Base e Applicate per l’Ingegneria

Pal. E - Via Scarpa 16 -ROMA

Although there are still many open problems, nowadays, Quantum Information Theory has established Entanglement as a key ingredient and a fundamental resource for Quantum Communication, Quantum Information Processing and Quantum Computing. Entanglement has always been a key issue in the ongoing debate about foundations and interpretation of Quantum Mechanics, since Einstein and Schroedinger expressed their deep dissatisfaction about this astonishing part of Quantum Theory. For a long time discussions about entanglement were purely meta-theoretical (sometime meta-physical). This situation was changed in 1964 by John Bell’s consideration that the Einstein-Podolsky-Rosen (EPR) paradox could be formulated in the form of assumptions naturally leading to a falsifiable prediction. Whereas until 1989, entanglement was widely believed to be equivalent to the violation of a Bell Inequality, it turned out that such a violation is neither necessary for mixed entangled states nor a good measure for the amount of entanglement and the question, whether a given quantum state is entangled or merely classically correlated, is still a dilemma.  A number of key issues and experiments related to the entanglement will be discussed .