descriptionPublicationkeyboard_double_arrow_right Article , Preprint 06 Jun 2005Embargo end date: 01 Jan 2005 English Publisher:American Physical Society (APS)Journal:Physical Review A, volume 71 (issn: 1050-2947, eissn: 1094-1622,

Authors: Clive Emary; Tobias Brandes; Neill Lambert;

doi: 10.1103/physreva.71.062302 , 10.48550/arxiv.quant-ph/0503160

arXiv: http://arxiv.org/abs/quant-ph/0503160

Entanglement in quantum catastrophes

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Abstract

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.

7 pages, 3 figures

Related Organizations

School of Physics and Astronomy / The University of Manchester
United Kingdom
University of Salford
United Kingdom
University of Manchester
United Kingdom
Leiden University
Netherlands

Keywords

Quantum Physics, Condensed Matter - Mesoscale and Nanoscale Physics, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), FOS: Physical sciences, Quantum Physics (quant-ph)

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