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arxiv: 1503.05001 · v3 · pith:MMKS2J7Wnew · submitted 2015-03-17 · 🪐 quant-ph

Generalized conditions for genuine multipartite continuous-variable entanglement

classification 🪐 quant-ph
keywords entanglementconditionsgenuinemultipartiteconditioncontinuous-variabledetectnumerically
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We derive a hierarchy of continuous-variable multipartite entanglement conditions in terms of second-order moments of position and momentum operators that generalizes existing criteria. Each condition corresponds to a convex optimization problem which, given the covariance matrix of the state, can be numerically solved in a straightforward way. The conditions are independent of partial transposition and thus are also able to detect bound entangled states. Our approach can be used to obtain an analytical condition for genuine multipartite entanglement. We demonstrate that even a special case of our conditions can detect entanglement very efficiently. Using multi-objective optimization it is also possible to numerically verify genuine entanglement of some experimentally realizable states.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. On the existence of fully inseparable biseparable Gaussian states

    quant-ph 2026-05 unverdicted novelty 4.0

    Numerical evidence from projections and witnesses on specific Gaussian families leads to the conjecture that full inseparability implies genuine multipartite entanglement for all Gaussian states.