Continuous‐Variable Quantum Key Distribution with Gaussian Modulation—The Theory of Practical Implementations (Adv. Quantum Technol. 1/2018)
Fabian Laudenbach, Christoph Pacher, Chi‐Hang Fred Fung, Andreas Poppe, Momtchil Peev, Bernhard Schrenk, Michael Hentschel, Philip John Walther, Hannes Hübel · Advanced Quantum Technologies · 2018
Quantum key distribution allows two parties to establish an encryption key that, by the laws of physics, no other party can have knowledge on and therefore enables information-theoretic communication security. In particular, quantum key distribution with continuous variables (CV-QKD) represents a way to exercise quantum cryptography at a high technological readiness level taking advantage of the leading-edge technological infrastructure provided by the telecom industry. The review by Fabian Laudenbach et al. (article number 1800011) provides a detailed introduction to the mathematical tools and relations required for the security analysis of CV-QKD and particularly deals with the effects of necessarily imperfect hardware components.