2005/02/17 by Christian Schmid, Pavel Trojek, Harald Weinfurter +3 · 2 citations
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1103/physrevlett.95.230505
published as Phys. Rev. Lett. 95, 230505 (2005) · 5 pages, 2 figures, submitted December 29, 2004
arxiv created 2005/02/17 · arxiv updated 2009/12/01
We present a simple and practical protocol for the solution of a secure multiparty communication task, the secret sharing, and its experimental realization. In this protocol, a secret message is split among several parties in a way that its reconstruction require the collaboration of the participating parties. In the proposed scheme the parties solve the problem by a sequential communication of a single qubit. Moreover we show that our scheme is equivalent to the use of a multiparty entangled GHZ state but easier to realize and better scalable in practical applications.