Volume 124, Number 1, October 2018
|Number of page(s)||6|
|Published online||29 October 2018|
Entangled states and the gravitational quantum well
1 Departamento de Física e Astronomia, Faculdade de Ciências da Universidade do Porto Rua do Campo Alegre, 687, 4169-007 Porto, Portugal
2 Centro de Física do Porto - Rua do Campo Alegre, 687, 4169-007 Porto, Portugal
3 GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa Avenida Rovisco Pais 1, 1049-001 Lisboa, Portugal
Received: 15 July 2018
Accepted: 25 September 2018
We study the continuous variable entanglement of a system of two particles under the influence of the 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 entangled states at different potentials based on the correlation of states of the gravitational quantum well.
PACS: 03.65.-w – Quantum mechanics / 28.20.-v – Neutron physics / 36.40.-c – Atomic and molecular clusters
© EPLA, 2018
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