Protection of entanglement from sudden death using continuous dynamical decoupling
Quantum Physics
2015-05-13 v2
Abstract
We show that continuous dynamical decoupling can protect a two-qubit entangled state from sudden death at finite temperature due to uncorrelated dephasing, bit flipping, and dissipation. We consider a situation where an entangled state shared between two non-interacting qubits is initially prepared and left evolve under the environmental perturbations and the protection of external fields. To illustrate the protection of the entanglement, we solve numerically a master equation in the Born approximation, considering independent boson fields at the same temperature coupled to the different error agents of each qubit.
Cite
@article{arxiv.0707.4092,
title = {Protection of entanglement from sudden death using continuous dynamical decoupling},
author = {F. F. Fanchini and R. d. J. Napolitano},
journal= {arXiv preprint arXiv:0707.4092},
year = {2015}
}