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The coefficient relates to the squeezing of collective observables in the <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mml:mn>2<\/mml:mn><mml:mi>N<\/mml:mi><\/mml:math>-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.<\/jats:p>","DOI":"10.22331\/q-2017-07-14-17","type":"journal-article","created":{"date-parts":[[2017,7,14]],"date-time":"2017-07-14T06:57:29Z","timestamp":1500015449000},"page":"17","source":"Crossref","is-referenced-by-count":23,"title":["Entanglement and squeezing in continuous-variable systems"],"prefix":"10.22331","volume":"1","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4203-0366","authenticated-orcid":false,"given":"Manuel","family":"Gessner","sequence":"first","affiliation":[{"name":"QSTAR, INO-CNR and LENS, Largo Enrico Fermi 2, I-50125 Firenze, Italy"}]},{"given":"Luca","family":"Pezz\u00e8","sequence":"additional","affiliation":[{"name":"QSTAR, INO-CNR and LENS, Largo Enrico Fermi 2, I-50125 Firenze, Italy"}]},{"given":"Augusto","family":"Smerzi","sequence":"additional","affiliation":[{"name":"QSTAR, INO-CNR and LENS, Largo Enrico Fermi 2, I-50125 Firenze, Italy"}]}],"member":"9598","published-online":{"date-parts":[[2017,7,14]]},"reference":[{"doi-asserted-by":"publisher","unstructured":"M. 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