Entanglement swapping of generalized cat states and secret sharing

Department of Computer Science, Sharif University of Technology(Dated: February 1, 2008)We introduce generalized cat states for d-level systems and obtain concise formulas for their en-tanglement swapping with generalized Bell states. We then use this to provide both a generalizationto the d-level case and a transparent proof of validity for an already proposed protocol of secretsharing based on entanglement swapping.