  Quantum Conference Key Agreement (CKA) is a cryptographic effort of multiple
parties to establish a shared secret key. While bipartite quantum key
distribution protocols are also useful in the context of CKA, multipartite
protocols allow for a more efficient generation of the necessary correlations
and are therefore viewed favorably in the context of quantum networks. In
future quantum networks, generating secret keys in an anonymous way is of
tremendous importance for parties that do not only want to keep their shared
key secret but also protect their own identity, e.g. in the context of
whistle-blowing.
  In this paper we provide the first protocol for Anonymous Quantum Conference
Key Agreement and demonstrate it using four-photon Greenberger-Horne-Zeilinger
($\mathrm{GHZ}$) states.
