Fundamental And Practical Problems of QKD Security - the Actual and the Perceived Situation
Horace P. Yuen

TL;DR
This paper challenges the common belief that quantum key distribution (QKD) is unconditionally secure, highlighting fundamental and practical security issues in current models and experimental schemes.
Contribution
It critically examines the assumptions and limitations of existing security proofs for QKD, revealing gaps between theoretical security and real-world applicability.
Findings
Current QKD security claims are overly optimistic.
Fundamental security gaps exist in practical QKD implementations.
Security models need refinement to reflect real-world conditions.
Abstract
It is widely believed that quantum key distribution (QKD) has been proved unconditionally secure for realistic models applicable to various current experimental schemes. Here we summarize briefly why this is not the case, from both the viewpoints of fundamental quantitative security and applicable models of security analysis, with some morals drawn.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
