Decay of Entanglement Due to Pure Dephasing: the Role of Geometry of Entangled States
Katarzyna Roszak, Paweł Machnikowski, Lucjan Jacak · Open Systems & Information Dynamics · 2007
The study of the effect that pure dephasing has on the entanglement of a pair of two-level systems shows that complete disentanglement may be caused by partial pure dephasing for some initial entangled states. We examine the behaviour of the entanglement of two confined charge states under the influence of partial pure dephasing introduced by a super-Ohmic reservoir (typical for semiconductors). We classify the set of completely dephasible states and provide an explanation of this effect.