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Entanglement Theory Quantum Correlations

Spin Fidelity for Three-qubit Greenberger-Horne-Zeilinger and W States Under Lorentz Transformations

arXiv

Authors: Bahram Nasr Esfahani, Mohsen Aghaee

Year

2010

Paper ID

10690

Status

Preprint

Abstract Read

~2 min

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Abstract

Constructing the reduced density matrix for a system of three massive spin-frac{1}{2} particles described by a wave packet with Gaussian momentum distribution and a spin part in the form of GHZ or W state, the fidelity for the spin part of the system is investigated from the viewpoint of moving observers in the jargon of special relativity. Using a numerical approach, it turns out that by increasing the boost speed, the spin fidelity decreases and reaches to a non-zero asymptotic value that depends on the momentum distribution and the amount of momentum entanglement.

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Constructing the reduced density matrix for a system of three massive spin-frac12 particles described by a wave packet with Gaussian momentum distribution and a spin part in...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1010.5330 [2] arXiv https://arxiv.org/abs/1010.5330 [3] Publisher https://arxiv.org/abs/1010.5330

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