Efficient entanglement criteria for discrete, continuous, and hybrid variables

Year: 2016

Authors: Gessner M., Pezzè L., Smerzi A.

Autors Affiliation: CNR, INO, QSTAR, Largo Enrico Fermi 2, I-50125 Florence, Italy; LENS, Largo Enrico Fermi 2, I-50125 Florence, Italy; Ist Nazl Ric Metrol, Str Cacce 91, I-10135 Turin, Italy.

Abstract: We develop 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.

Journal/Review: PHYSICAL REVIEW A

Volume: 94 (2)      Pages from: 20101-1  to: 20101-6

KeyWords: Fisher Information; Quantum; Generation
DOI: 10.1103/PhysRevA.94.020101

Citations: 53
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