Boosting quantum key distribution via the end-to-end physical control

TL;DR

This paper introduces a novel end-to-end physical control method to significantly enhance quantum key distribution, enabling long-distance, high-rate secure communication without trust nodes.

Contribution

It presents a new technique leveraging physical control of information leaks to improve QKD performance and security over unlimited distances.

Findings

Achieved unprecedented high rates in QKD protocols.

Enabled long-distance QKD without trust nodes.

Enhanced security by physical control of quantum channels.

Abstract

Quantum key distribution (QKD) is a cornerstone of the secure quantum encryption. Building on the quantum irreversibility, we develop a technique reborning the existing QKDs into protocols that are unrestricted in distance and have unprecedented high rates enhanced up to the standard protocols communication speeds. The core of our method is the continuous end-to-end physical control of information leaks in the quantum channel. Contrary to the existing long-distance QKD offerings, our technique does not require any trust nodes.