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arXiv · 1702.08413

Entanglement and squeezing in continuous-variable systems

Manuel Gessner·Luca Pezzè·Augusto Smerzi
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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.

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Manuel Gessner, Luca Pezzè, Augusto Smerzi. 2017-07-12. Entanglement and squeezing in continuous-variable systems. https://doi.org/10.22331/q-2017-07-14-17

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