Gravitationally Mediated Entanglement with Superpositions of Rotational Energies

• URL: http://arxiv.org/abs/2403.02062v1
• Date: Mon, 4 Mar 2024 14:05:36 GMT
• Title: Gravitationally Mediated Entanglement with Superpositions of Rotational Energies
• Authors: Gerard Higgins, Andrea Di Biagio, Marios Christodoulou
• Abstract summary: Experimental proposals for testing quantum gravity-induced entanglement of masses (QGEM) typically involve two interacting masses which are each in a spatial superposition state. Here, we propose a QGEM experiment with two particles which are each in a superposition of rotational states, this amounts to a superposition of mass through mass-energy equivalence.
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• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Experimental proposals for testing quantum gravity-induced entanglement of masses (QGEM) typically involve two interacting masses which are each in a spatial superposition state. Here, we propose a QGEM experiment with two particles which are each in a superposition of rotational states, this amounts to a superposition of mass through mass-energy equivalence. Our proposal relies on the fact that rotational energy gravitates. This approach would test a feature unique to gravity since it amounts to sourcing a spacetime in superposition due to a superposition of 'charge'. We propose and analyse a concrete experimental protocol and discuss challenges.

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