Scientific Results

Entanglement and squeezing in continuous-variable systems

Year: 2017

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

Autors Affiliation: INO CNR, QSTAR, Largo Enrico Fermi 2, I-50125 Florence, Italy; LENS, Largo Enrico Fermi 2, I-50125 Florence, Italy

Abstract: We introduce a multi-mode squeezing coefficient to characterize entanglement in N-partite continuous-variable systems. The coefficient relates to the squeezing of collective observables in the 2N-dimensional phase space and can be readily extracted from the covariance matrix. Simple extensions further permit to reveal entanglement within specific partitions of a multipartite system. Applications with nonlinear observables allow for the detection of non-Gaussian entanglement.

Journal/Review: QUANTUM

Volume: 1      Pages from: 17-1  to: 17-11

KeyWords: HYBRID ENTANGLEMENT; QUANTUM; CRITERION; DYNAMICS; INFORMATION; GENERATION
DOI: 10.22331/q-2017-07-14-17

Citations: 9
data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2021-10-24
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