Implementation Security in Quantum Key Distribution

The problem of implementation security in quantum key distribution (QKD) refers to the difficulty of meeting the requirements of mathematical security proofs in real-life QKD systems. Here, a succint review is provided on this topic, focusing on discrete-variable QKD setups. Particularly, some of their main vulnerabilities and comments are disscused on possible approaches to overcome them. The problem of implementation security in quantum key distribution (QKD) refers to the difficulty of meeting the requirements of mathematical security proofs in real-life QKD systems. The present work provides a succint review on this topic, focusing on discrete-variable QKD setups. Particularly, their main vulnerabilities are discussed, together with possible approaches to overcome them.image