Entanglement within the Quantum Trajectory Description of Open Quantum Systems
Hyunchul Nha, H. J. Carmichael · Physical Review Letters · 2004
The degree of entanglement in an open quantum system varies according to how information in the environment is read. A measure of this contextual entanglement is introduced based on quantum trajectory unravelings of the open system dynamics. It is used to characterize the entanglement in a driven quantum system of dimension 2 x infinity where the entanglement is induced by the environmental interaction. A detailed mechanism for the environment-induced entanglement is given.