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Foundations of Physics

Quantum integrals of motion and gravity wave experiment: Measurements in pure quantum states

V. V. Dodonov, Vladimir I. Man’ko, Valentin N. Rudenko

Published Jun 1, 1983• 4 citations
Publisher
DOI
10.1007/bf00730100

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The interface between quantum theory and gravity represents still uncharted territory. Recently, a tabletop experiment has been proposed for witnessing quantum features of gravity: Two masses in an initial superposition of spatially localized states interact only through gravity and it is measured whether the final state is entangled. Here we show that one can generate the same amount of entanglement in this setup by using the time evolution given by Newton's laws of motion. We argue that theories of quantum gravity that can be approximated by the Newtonian potential and time evolution given by Newton's laws of motion will generate gravity-mediated entanglement.