Geometry of Entanglement Sudden Death: Explicit Examples
Raphael C. Drumond, Marcelo O. Terra Cunha, Luigi Accardi, Guillaume Adenier, Christopher Fuchs, Gregg Jaeger, Andrei Yu. Khrennikov, Jan-Åke Larsson, Stig Stenholm · AIP conference proceedings · 2009
In open quantum systems, entanglement can vanish faster than coherence. This phenomenon is usually called sudden death of entanglement. In [M. O. Terra Cunha, New J. Phys. 9, 237 (2007)] a geometrical explanation was offered and a classification of all possible scenarios was given. Some classes were examplified, but it was still an open question whether there were examples for the other ones. This was solved in [R. C. Drumond and M. O. Terra Cunha, arXiv:0809.4445v1]. Here we briefly review the problem, state our results in a precise way, discuss the generality of the approach, and add some speculative desirable generalizations.