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Entangled States and the Gravitational Quantum Well

We study the continuous variable entanglement of a system of two particles under the influence of Earth's gravitational field. We determine a phase-space description of this bipartite system by calculating its Wigner function and verify its entanglement by applying a generalization of the PPT criterion for non-Gaussian states. We also examine the influence of gravity on an idealized entanglement protocol to be shared between stations at different potentials based on the correlation of states of the gravitational quantum well.

preprint2016arXivOpen access
Rui AlvesCatarina BastosOrfeu Bertolami
gr-qcquant-ph
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Rui AlvesCatarina BastosOrfeu Bertolami

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