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Single Qubit Quantum Secret Sharing

Christian Schmid·Pavel Trojek·Harald Weinfurter·Mohamed Bourennane·Marek Zukowski·Christian Kurtsiefer
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Abstract

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.

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Christian Schmid, Pavel Trojek, Harald Weinfurter, Mohamed Bourennane, Marek Zukowski, Christian Kurtsiefer. 2005-02-17. Single Qubit Quantum Secret Sharing. https://doi.org/10.1103/physrevlett.95.230505

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