Bipartite entanglement and hypergraph states

Bipartite entanglement and hypergraph states We investigate some properties of multipartite entanglement of hypergraph states in purely hypergraph theoretical terms. We first introduce an approach for computing the concurrence between two specific qubits of a hypergraph state by using the so-called Hamming weights of several special subhypergraphs of the corresponding hypergraph. Then, we quantify and characterize bipartite entanglement between each qubit pair of several special hypergraph states in terms of the concurrence obtained by using the above approach. Our main result includes that a graph g has a component with the vertex set $$\{i,j\}$$ { i , j } if and only if the qubit pair labeled by $$\{i,j\}$$ { i , j } of the graph state $$|g\rangle $$ | g ⟩ is entangled. Quantum Information Processing Springer Journals

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Springer US
Copyright © 2014 by Springer Science+Business Media New York
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
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