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Open Quantum Systems Decoherence

Qubit Entanglement Dephasing Dynamics Driven by a Bath of Spins

arXiv
Authors: Jie Xu, Jun Jing, Ting Yu

Year

2010

Paper ID

11327

Status

Preprint

Abstract Read

~2 min

Abstract Words

109

Citations

N/A

Abstract

We study the entanglement dynamics for a two-spin system coupled to a spin environment of different configurations by z-x type interaction. The models considered in this paper are solved both analytically and numerically giving rise to some concise analytical expressions when certain approximations are properly made. Our purpose is to find how the initial states of the environment with different numbers of spins affect the decay or revival of the entanglement between central qubits. In Particular, it is found that the block-entangled environment could speed up the decay and revival of the qubit entanglement. Our results exhibit some interesting features that have not been found for a boson bath.

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  • We study the entanglement dynamics for a two-spin system coupled to a spin environment of different configurations by z-x type interaction.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1009.2128 [2] arXiv https://arxiv.org/abs/1009.2128 [3] Publisher https://arxiv.org/abs/1009.2128

Local Citation Graph (Related-Paper Links)

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