Mahadevan Subramaniam

Abstract Quantum Key Distribution (QKD) is revolutionizing cryptography by promising information-theoretic security through the laws of quantum mechanics. Yet, the challenge of transforming these idealized security models into practical systems remains a pressing issue, especially as quantum computing evolves. In this review, we critically examine the latest advancements in QKD protocols and their security vulnerabilities, with an emphasis on rigorous security proofs.

Abstract Secure quantum networks are a bedrock requirement for developing a future quantum internet. However, quantum channels are susceptible to channel noise that introduce errors in the transmitted data. The traditional approach to providing error correction typically encapsulates the message in an error correction code after encryption. Such separate processes incur overhead that must be avoided when possible.