https://www.sciencedaily.com/releases/2020/06/200629120227.htm

University of Queensland researchers have successfully verified a counterintuitive idea from quantum theory -- that ignorance of the whole does not necessarily imply ignorance of the parts -- in the lab.

UQ physicist Dr Jacqui Romero from the ARC Centre of Excellence for Engineered Quantum Systems (EQUS) said the team's findings would be important when evaluating security in quantum encryption.