Abstract
We study the effect of pure dephasing on the entanglement of two charge qubits. The pure dephasing is due to the dephasing between two states of two electrons confined in double quantum dot (no relaxation). We evaluate the concurrence in order to quantify the evolution of the degree of entanglement. We show that the pure dephasing due to the interaction with acoustic phonons led to complete disentanglement.
© 2011 Optical Society of America
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