English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present a tight security analysis of the Bennett-Brassard 1984 protocoltaking into account the finite size effect of key distillation, and achievingunconditional security. We begin by presenting a concise analysis utilizing thenormal approximation of the hypergeometric function. Then next we show that asimilarly tight bound can also be obtained by a rigorous argument withoutrelying on any approximation. In particular, for the convenience ofexperimentalists who wish to evaluate the security of their QKD systems, wealso give explicit procedures of our key distillation, and also show how tocalculate the secret key rate and the security parameter from a given set ofexperimental parameters. Besides the exact values of key rates and securityparameters, we also present how to obtain their rough estimates using thenormal approximation.

Concise and Tight Security Analysis of the Bennett-Brassard 1984 Protocol with Finite Key Lengths