Ancsin, PhilippePhilippeAncsinCabrejo Ponce, MeritxellMeritxellCabrejo PonceSteinlechner, Fabian OliverFabian OliverSteinlechner2024-04-102024-04-102023https://publica.fraunhofer.de/handle/publica/46592610.1109/CLEO/EUROPE-EQEC57999.2023.102318632-s2.0-85175733670Passive entangled photon sources, in which only one state is optimized for are suitable for two-party quantum key distribution (QKD). However, quantum based protocols that involve more participants require a more flexible photon source. In particular, quantum secret sharing (QSS) can be implemented using two-photon states only, whereby the source acts as an active participant [1].enconference paper