A device-independent quantum key distribution system for distant users.

ABSTRACT: Device-independent quantum key distribution (DIQKD) enables the generation of secret keys over an untrusted channel using uncharacterized and potentially untrusted devices^1-9. The proper and secure functioning of the devices can be certified by a statistical test using a Bell inequality^10-12. This test originates from the foundations of quantum physics and also ensures robustness against implementation loopholes¹³, thereby leaving only the integrity of the users' locations to be guaranteed by other means. The realization of DIQKD, however, is extremely challenging-mainly because it is difficult to establish high-quality entangled states between two remote locations with high detection efficiency. Here we present an experimental system that enables for DIQKD

SUBMITTER: Zhang W 

PROVIDER: S-EPMC9329124 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature