Multipartite maximally entangled states in symmetric scenarios

Details Multipartite maximally entangled states in symmetric scenarios Multipartite maximally entangled states in symmetric scenarios

2012-04-15

arxiv.org/abs/1204.3307v1

Physics

Quantum Physics

6 pages, 4 figures

Scientific paper

We consider the class of (N+1)-partite states suitable for protocols where there is a powerful party, the authority, and the other N parties play the same role, namely the state of their system live in the symmetric Hilbert space. We show that, within this scenario, there is a "maximally entangled state" that can be transform by a LOCC protocol into any other state. In addition, we show how to make the protocol efficiently including the construction of the state and discuss security issues for possible applications to cryptographic protocols. As an immediate consequence we recover a sequential protocol that implements the one to N symmetric cloning.

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