2023-09-212023-09-212020Foletto, G., Calderaro, L., Tavakoli, A., Schiavon, M., Picciariello, F., Cabello Quintero, A.,...,Vallone, G. (2020). Weak measurements for reutilizing entanglement. En 24th IMEKO TC4 International Symposium and 22nd International Workshop on ADC and DAC Modelling and Testing, Palermo (Italy).https://hdl.handle.net/11441/149079Weak measurements are a relevant tool for quantum information because they allow tuning the disturbance on the observed state and the amount of information extracted from it. They can be used to harness repeatedly a quantum resource from the same state, thus boosting the performance of many protocols. We verified experimentally that sequences of weak measurements can generate correlations strong enough to violate the CHSH inequality multiple times, and yet can leave the state entangled enough for the next CHSH test. This means that entanglement can be certified and utilized more times, which is important for fundamental tests of quantum theory and above all for deviceindependent quantum information.application/pdf5 p.engAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Weak measurementsQuantum informationinfo:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/openAccess