Llanos, E.E.LlanosSarmiento, SamaelSamaelSarmientoTabares, Jeison AlejandroJeison AlejandroTabaresBazzani, ElisaElisaBazzaniLazaro, Jose A.Jose A.LazaroVehmas, TapaniTapaniVehmasVasquez, Yisbel MarinYisbel MarinVasquezThomas, GeorgeGeorgeThomasForsten, HenrikHenrikForstenWälchli, BenBenWälchliPourjamal, SaraSaraPourjamalKresse, MartinMartinKresseGupta, Y DurvasaY DurvasaGuptaKleinert, MoritzMoritzKleinertKeil, NorbertNorbertKeilEtcheverry, SebastiánSebastiánEtcheverry2025-10-022025-10-022025https://publica.fraunhofer.de/handle/publica/49658710.1109/ICTON67126.2025.111254122-s2.0-105016132026Quantum key distribution (QKD) enables secure secret key exchange with information-theoretic security by leveraging the principles of quantum mechanics. Continuous-variable QKD (CV-QKD), which utilizes coherent states and coherent detection, has gained attention as a promising approach due to its seamless integration with existing telecommunications networks. CV-QKD systems, which are built with standard telecommunication components, open the door - through photonic integration technology - to the development of devices that are more affordable, compact, and energy efficient. This paper reviews the current state of the art and highlights our recent progress toward fully integrated CV-QKD systems.enfalseContinuous-variable quantum key distributionphotonic integrated circuitsconference paper