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Entanglement Theory Quantum Correlations

Multipartite entanglement of superpositions

arXiv

Authors: D. Cavalcanti, M. O. Terra Cunha, A. Acin

Year

2007

Paper ID

50262

Status

Preprint

Abstract Read

~2 min

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Abstract

The entanglement of superpositions [Phys. Rev. Lett. 97, 100502 (2006)] is generalized to the multipartite scenario: an upper bound to the multipartite entanglement of a superposition is given in terms of the entanglement of the superposed states and the superposition coefficients. This bound is proven to be tight for a class of states composed by an arbitrary number of qubits. We also extend the result to a large family of quantifiers which includes the negativity, the robustness of entanglement, and the best separable approximation measure.

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This paper contributes to the Entanglement Theory & Quantum Correlations research area in the Quantum Articles archive.
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The entanglement of superpositions [Phys.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:0705.2521 [2] arXiv https://arxiv.org/abs/0705.2521 [3] Publisher https://arxiv.org/abs/0705.2521

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