Source-linked AI summary
Practical challenges in quantum key distribution
Eleni Diamanti, Hoi-Kwong Lo, Bing Qi, Zhiliang Yuan
TL;DR
QKD still faces challenges in key rate, distance, size, cost, and practical security that stand between current deployment and wider adoption. This review surveys those challenges and approaches to address them, highlighting diverse solutions and substantial progress.
Problem
Key rate, distance, size, cost, and practical security remain challenges to wider use of QKD.
Source: p. 2Method
The paper surveys practical QKD challenges and reviews approaches being pursued to address them.
Source: p. 2Results
The review describes diverse protocols and experimental solutions and reports tremendous progress in QKD in recent years.
Source: p. 4Takeaways & Limitations
The review frames practical QKD as a driver of innovation and a precursor to quantum information processing.
Source: p. 2Unavoidable fiber attenuation limits point-to-point QKD links to a few hundred kilometers.
Source: p. 4
Abstract
from arXiv · showhide
Quantum key distribution (QKD) promises unconditional security in data communication and is currently being deployed in commercial applications. Nonetheless, before QKD can be widely adopted, it faces a number of important challenges such as secret key rate, distance, size, cost and practical security. Here, we survey those key challenges and the approaches that are currently being taken to address them.
ADDITIONAL INFORMATION
The section gives a correspondence contact and includes fragments of additional source information.
- Correspondence and requests for materials should be addressed to H.-K.L.Source: ADDITIONAL INFORMATION · p. 10
- The source fragments identify a Statistics Canada webpage as [2] and a Britannica entry as [3].Source: ADDITIONAL INFORMATION · p. 11