Researchers at ETH Zürich and National University of Singapore have carried out a study investigating whether advantage distillation, a classical cryptography technique that has so far never been successfully implemented, can be applied to device-independent quantum key distribution (DIQKD) systems with the aim of creating a secret key for communication between different parties. The term DIQKD describes a novel form of quantum cryptography that allows honest users to certify information security using only the observed measurement statistics.
Source:
https://phys.org/news/2020-02-advantage-distillation-device-independent-quantum-key.html