CONTROLLED DENSE CODING WITH CLUSTER STATE
Guoqiang Huang, Cui-Lan Luo · International Journal of Quantum Information · 2012
Two schemes for controlled dense coding with a one-dimensional four-particle cluster state are investigated. In this protocol, the supervisor (Cliff) can control the channel and the average amount of information transmitted from the sender (Alice) to the receiver (Bob) by adjusting the local measurement angle θ. It is shown that the results for the average amounts of information are unique from the different two schemes.