Unknown

Dataset Information

0

Practical device-independent quantum cryptography via entropy accumulation.


ABSTRACT: Device-independent cryptography goes beyond conventional quantum cryptography by providing security that holds independently of the quality of the underlying physical devices. Device-independent protocols are based on the quantum phenomena of non-locality and the violation of Bell inequalities. This high level of security could so far only be established under conditions which are not achievable experimentally. Here we present a property of entropy, termed "entropy accumulation", which asserts that the total amount of entropy of a large system is the sum of its parts. We use this property to prove the security of cryptographic protocols, including device-independent quantum key distribution, while achieving essentially optimal parameters. Recent experimental progress, which enabled loophole-free Bell tests, suggests that the achieved parameters are technologically accessible. Our work hence provides the theoretical groundwork for experimental demonstrations of device-independent cryptography.

SUBMITTER: Arnon-Friedman R 

PROVIDER: S-EPMC5792631 | BioStudies | 2018-01-01T00:00:00Z

REPOSITORIES: biostudies

Similar Datasets

1000-01-01 | S-EPMC4223666 | BioStudies
2020-01-01 | S-EPMC7005808 | BioStudies
2012-01-01 | S-EPMC3274703 | BioStudies
2019-01-01 | S-EPMC6925125 | BioStudies
2019-01-01 | S-EPMC6461635 | BioStudies
2019-01-01 | S-EPMC6882898 | BioStudies
2013-01-01 | S-EPMC3868229 | BioStudies
2012-01-01 | S-EPMC3274704 | BioStudies
2020-01-01 | S-EPMC7235259 | BioStudies
2019-01-01 | S-EPMC6884444 | BioStudies