Speaker
Description
Continuous-variable systems offer a promising platform for quantum networks achieving high rates, while employing the existing infrastructure. Modular star networks was one of the attempts to extend CV-QKD towards networking schemes exploiting MDI setup. We first discuss the performance of this approach to implement quantum conferencing key agreement and quantum secret-sharing then, adopting recent finite-size composable security proofs we bound the key-rates for coherent state protocols under collective attacks. We study the extension of the star network to thermal states by considering frequency regimes beyond the optical one, like the THz regime and we then discuss some results when we consider using CV-QKD in the framework of constrained devices.
