We study the evolution of purity, entanglement, and total correlations of general two-mode continuous variable Gaussian states in arbitrary uncorrelated Gaussian environments. The time evolution of purity, von Neumann entropy, logarithmic negativity, and mutual information is analyzed for a wide range of initial conditions. In general, we find that a local squeezing of the bath leads to a faster degradation of purity and entanglement, while it can help to preserve the mutual information between the modes.
|Titolo:||Entanglement and purity of two-mode Gaussian states in noisy channels|
|Data di pubblicazione:||2004|
|Appare nelle tipologie:||1.1.2 Articolo su rivista con ISSN|