Entanglement in quantum catastrophes

Details Entanglement in quantum catastrophes Entanglement in quantum catastrophes

2005-03-17

arxiv.org/abs/quant-ph/0503160v1

Physics

Quantum Physics

7 pages, 3 figures

Scientific paper

10.1103/PhysRevA.71.062302

We classify entanglement singularities for various two-mode bosonic systems in terms of catastrophe theory. Employing an abstract phase-space representation, we obtain exact results in limiting cases for the entropy in cusp, butterfly, and two-dimensional catastrophes. We furthermore use numerical results to extract the scaling of the entropy with the non-linearity parameter, and discuss the role of mixing entropies in more complex systems.

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