Efficient entanglement criteria for discrete, continuous, and hybrid variables
arXiv:1608.02421 · doi:10.1103/PhysRevA.94.020101
Abstract
We provide a method to construct entanglement criteria for arbitrary multipartite systems of discrete or continuous variables and hybrid combinations of both. While any set of local operators generates a sufficient condition for entanglement of arbitrary quantum states, a suitable set leads to a necessary and sufficient criterion for pure states. The criteria are readily implementable with existing technology and reveal entanglement that remains undetected by the respective state-of-the-art methods for discrete and continuous variables.
6 pages, 2 figures
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