Prof.
Adam
Bednorz
Institute of Theoretical Physics, Faculty of Physics, University of Warsaw
Quantum resources can be verified by a null witness, a determinant of probabilities of results of a specified measurement protocol, which is zero up to finite statistics error if the system is of a limited dimension. The protocol involves a prepare-and-measure scenario for single systems, and a measure-and-measure or prepare-and-prepare scenario for a bipartite system, assuming the independence of the two parties. The application to public providers, IBM Quantum, IQM Resonance, and IonQ, reveals inconsistencies in the simple qubit picture, indicating a nontrivial contribution of extra space beyond standard technical imperfections. Moreover, even simple tests of no-signaling fail in particular cases of IBM Quantum.
This is a hybrid event:
Room D, the Institute of Physics PAS, Al. Lotników 32/46
Online: Zoom Link, (Passcode: 134595, Meeting ID: 823 8038 0442)
