Rio is receiving a lot of quantum-info guests these last weeks of July and beginning of August. At the moment we have Andreas Ketterer and Pérola Milman from University Paris Diderot. Next week there will be Gerardo Adesso, Rosario Lo Franco, Lucas Céleri, Olivier Brodier and Stefan Boettcher, plus the locals, of course.
We take this chance to see what people have been working on. Andreas was kind enough to accept to give a talk here on his recent work. See details below and stay tuned for the next talks.
Speaker: Andreas Ketterer (University Paris Diderot)
Coordinates: room 601D, CBPF. 04.08, 16:00h
Title: Devising a general framework to test CHSH inequalities
Abstract:The Clauser-Horne-Shimony and Holt inequality applies when measurements with binary out- comes are performed on physical systems under the assumption of local realism. Testing such inequalities in the quantum realm involves either measurements of two–valued quantum observables or pre-defining a context dependent binning procedure. Here we establish the conditions to test the Clauser-Horne-Shimony and Holt inequality using any quantum observable. Our result applies to observables with an arbitrary spectrum and no prior knowledge of their Hilbert space’s dimension is required. This general measurement strategy can be seen as positive operator valued measurements performed to the system.