Scalable method to estimate experimentally the entanglement of multipartite systems

Multipartite entanglement in qubit systems

We introduce a potential of multipartite entanglement for a system of n qubits, as the average over all balanced bipartitions of a bipartite entanglement measure, the purity. We study in detail its expression and look for its minimizers, the maximally multipartite entangled states. They have a bipartite entanglement that does not depend on the bipartition and is maximal for all possible biparti...

Entanglement purification for high-dimensional multipartite systems

Yong Wook Cheong, Seung-Woo Lee, Jinhyoung Lee, and Hai-Woong Lee Quantum Photonic Science Research Center, Hanyang University, Seoul 133-791, Korea Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom BK21 Program Division of Advanced Research and Education in Physics, Hanyang University, Seoul 133-791, Korea Department of Physics, Hanyang University, Seoul 13...

Comparability of multipartite entanglement

Due to its numerous important applications[1–5] in the area of quantum information and computation, entanglement has been extensively studied in the past decade. The concept of considering entanglement as a new type of useful resource has been widely accepted. Efforts have been made to quantitatively and qualitatively measure this kind of resource in both bipartite and multipartite cases[6–8]. ...

Title Genuine multipartite entanglement without multipartite correlations

Genuine Multipartite Entanglement without Multipartite Correlations.

Nonclassical correlations between measurement results make entanglement the essence of quantum physics and the main resource for quantum information applications. Surprisingly, there are n-particle states which do not exhibit n-partite correlations at all but still are genuinely n-partite entangled. We introduce a general construction principle for such states, implement them in a multiphoton e...