Multiparty-controlled remote control without multipartite entanglement

Abstract

The multipartite Greenberger-Horne-Zeilinger (GHZ) state is an important resource in multiparty-controlled remote control protocols. However, its fragility and low intensity limit the practical applications of these protocols with current technologies. Here, we present a multiparty-controlled remote control protocol without multipartite entanglement. Then, we analyze the performance of our protocol under certain types of noise, and compare our protocol with existing GHZ-state-based protocols. We also show that our protocol exhibits a unique advantage: it can tolerate an arbitrary number of nonresponsive agents. This study provides a practical pathway for multiparty-controlled remote control.