Non-Gaussian states with strong positive partial transpose
Equipe Sciences de la Matière et du Rayonnement (ESMAR), Faculté des sciences, Université mohammed V, Av. Ibn Battouta, B.P. 1014, Agdal, Rabat, Morocco
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Received in final form: 7 September 2019
Published online: 24 October 2019
We consider the problem of entanglement criteria in non-Gaussian systems, providing a necessary and sufficient condition of separability of non-Gaussian states based on strong positive partial transpose (SPPT) of the corresponding density matrices. The separability conditions of states generated by photon subtraction from vacuum squeezed states are given.
Key words: Quantum Information
© EDP Sciences / Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature, 2019