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Open Quantum Systems Decoherence

Protection of entanglement from sudden death using continuous dynamical decoupling

arXiv
Authors: F. F. Fanchini, R. d. J. Napolitano

Year

2007

Paper ID

49539

Status

Preprint

Abstract Read

~2 min

Abstract Words

89

Citations

N/A

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.

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  • 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...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:0707.4092 [2] arXiv https://arxiv.org/abs/0707.4092 [3] Publisher https://arxiv.org/abs/0707.4092

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