Nonlinear Entanglement and its Application to Generating Cat States | Zendy

Yong Shen | Zendy; Syed M. Assad | Zendy; Nicolai B. Grosse | Zendy; X. Y. Li | Zendy; M. D. Reid | Zendy; Ping Koy Lam | Zendy

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Nonlinear Entanglement and its Application to Generating Cat States

Author(s) -

Yong Shen,

Syed M. Assad,

Nicolai B. Grosse,

X. Y. Li,

M. D. Reid,

Ping Koy Lam

Publication year - 2015

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.114.100403

Subject(s) - quantum entanglement , observable , physics , nonlinear system , quantum mechanics , epr paradox , quantum , statistical physics , harmonic oscillator , theoretical physics

The Einstein-Podolsky-Rosen (EPR) paradox, which was formulated to argue for the incompleteness of quantum mechanics, has since metamorphosed into a resource for quantum information. The EPR entanglement describes the strength of linear correlations between two objects in terms of a pair of conjugate observables in relation to the Heisenberg uncertainty limit.We propose that entanglement can be extended to include nonlinear correlations. We examine two driven harmonic oscillators that are coupled via third-order nonlinearity can exhibit quadraticlike nonlinear entanglement which, after a projective measurement on one of the oscillators, collapses the other into a cat state of tunable size

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