Entanglement and squeezing in continuous-variable systems
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 f...
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Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
2017-07-01
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| Series: | Quantum |
| Online Access: | https://quantum-journal.org/q-2017-07-14-17/pdf/ |
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doaj-9bbf025ec989462a87d56c3dece332922020-11-25T01:28:16ZengVerein zur Förderung des Open Access Publizierens in den QuantenwissenschaftenQuantum2521-327X2017-07-0111710.22331/q-2017-07-14-1710.22331/q-2017-07-14-17Entanglement and squeezing in continuous-variable systemsManuel GessnerLuca PezzèAugusto SmerziWe 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.https://quantum-journal.org/q-2017-07-14-17/pdf/ |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Manuel Gessner Luca Pezzè Augusto Smerzi |
| spellingShingle |
Manuel Gessner Luca Pezzè Augusto Smerzi Entanglement and squeezing in continuous-variable systems Quantum |
| author_facet |
Manuel Gessner Luca Pezzè Augusto Smerzi |
| author_sort |
Manuel Gessner |
| title |
Entanglement and squeezing in continuous-variable systems |
| title_short |
Entanglement and squeezing in continuous-variable systems |
| title_full |
Entanglement and squeezing in continuous-variable systems |
| title_fullStr |
Entanglement and squeezing in continuous-variable systems |
| title_full_unstemmed |
Entanglement and squeezing in continuous-variable systems |
| title_sort |
entanglement and squeezing in continuous-variable systems |
| publisher |
Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften |
| series |
Quantum |
| issn |
2521-327X |
| publishDate |
2017-07-01 |
| description |
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. |
| url |
https://quantum-journal.org/q-2017-07-14-17/pdf/ |
| work_keys_str_mv |
AT manuelgessner entanglementandsqueezingincontinuousvariablesystems AT lucapezze entanglementandsqueezingincontinuousvariablesystems AT augustosmerzi entanglementandsqueezingincontinuousvariablesystems |
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1725102690238726144 |