Observation of the entanglement sudden death
Marcelo Pereira de Almeida, Fernando de Melo, Malena O. Hor-Meyll, Alejo Salles, Stephen Patrick Walborn, P. H. Souto Ribeiro, L. Davidovich · Conference on Lasers and Electro-Optics · 2008
We demonstrate, using an all-optical setup, the difference between local and global dynamics of entangled quantum systems coupled to independent environments. Even when the decay of each system is asymptotic, quantum entanglement may suddenly disappear. We also demonstrate experimentally that measurements performed in the environment affects the local evolution.