In how many ways can quantum information be split ?

Details In how many ways can quantum information be split ? In how many ways can quantum information be split ?

2009-07-21

arxiv.org/abs/0907.3532v2

Physics

Quantum Physics

4 pages, Extended version

Scientific paper

We establish a theoretical understanding of the entanglement properties of a physical system that mediates a quantum information splitting protocol. We quantify the different ways in which an arbitrary $n$ qubit state can be split among a set of $k$ participants using a $N$ qubit entangled channel, such that the original information can be completely reconstructed only if all the participants cooperate. Based on this quantification, we show how to design a quantum protocol with minimal resources and define the splitting efficiency of a quantum channel which provides a way of characterizing entangled states based on their usefulness for such quantum networking protocols.

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