Determining the Dynamics of Entanglement

Abstract

Evolving Entanglement Quantum mechanical entanglement is a powerful but fragile resource for quantum information processing. It lends itself to increased computational power over classical computers. However, when quantum systems interact with their environment, which they must do if you want to follow what they are doing, then the entanglement can be lost. Jiménez Farías et al. (p. 1414 , published online 14 May) present an experimental and theoretical study on entangled photon pairs, showing that they can determine and understand how the entanglement evolves as the system interacts with its surroundings.