Complete and Partial Loss of Entanglement Due to a Phonon-Assisted Dephasing Process
Katarzyna Roszak, Paweł Machnikowski, Lucjan Jacak · Acta Physica Polonica A · 2006
We study the evolution of entanglement between two excitons in a double quantum dot system coupled to a super-Ohmic reservoir.As expected entanglement is more fragile than local coherence, but, surprisingly, for a set of pure states disentanglement can be complete in a finite time under conditions that lead to the usual partial pure-dephasing.