Gravitationally mediated entanglement: Newtonian field versus gravitons

DL Danielson, G Satishchandran, RM Wald - Physical Review D, 2022 - APS
We argue that if the Newtonian gravitational field of a body can mediate entanglement with
another body, then it should also be possible for the body producing the Newtonian field to …

Quantum superposition of massive objects and the quantization of gravity

A Belenchia, RM Wald, F Giacomini, E Castro-Ruiz… - Physical Review D, 2018 - APS
We analyze a Gedankenexperiment previously considered by Mari et al.[Sci. Rep. 6, 22777
(2016). SRCEC3 2045-2322 10.1038/srep22777] that involves quantum superpositions of …

[HTML][HTML] On the possibility of laboratory evidence for quantum superposition of geometries

M Christodoulou, C Rovelli - Physics Letters B, 2019 - Elsevier
We analyse the recent proposal of measuring a quantum gravity phenomenon in the lab by
entangling two mesoscopic particles gravitationally. We give a generally covariant …

Using an atom interferometer to infer gravitational entanglement generation

D Carney, H Müller, JM Taylor - PRX Quantum, 2021 - APS
If gravitational perturbations are quantized into gravitons in analogy with the electromagnetic
field and photons, the resulting graviton interactions should lead to an entangling interaction …

Locally mediated entanglement in linearized quantum gravity

M Christodoulou, A Di Biagio, M Aspelmeyer… - Physical Review Letters, 2023 - APS
The current interest in laboratory detection of entanglement mediated by gravity was
sparked by an information-theoretic argument: entanglement mediated by a local field …

Newton, entanglement, and the graviton

D Carney - Physical Review D, 2022 - APS
Many experiments have recently been proposed to test whether nonrelativistic gravitational
interactions can generate entanglement. In this paper, I consider the extent to which these …

A no-go theorem on the nature of the gravitational field beyond quantum theory

TD Galley, F Giacomini, JH Selby - Quantum, 2022 - quantum-journal.org
Recently, table-top experiments involving massive quantum systems have been proposed to
test the interface of quantum theory and gravity. In particular, the crucial point of the debate …

Locally mediated entanglement through gravity from first principles

M Christodoulou, A Di Biagio, M Aspelmeyer… - arXiv preprint arXiv …, 2022 - arxiv.org
Observing entanglement generation mediated by a local field certifies that the field cannot
be classical. This information-theoretic argument is at the heart of the race to observe gravity …

Quantum superposition of two gravitational cat states

C Anastopoulos, BL Hu - Classical and Quantum Gravity, 2020 - iopscience.iop.org
We extend our earlier work [1] on probing a gravitational cat state (gravcat) to the quantum
superposition of two gravcats in an exemplary model and in Bose–Einstein condensates …

Gravity entanglement, quantum reference systems, degrees of freedom

M Christodoulou, A Di Biagio, R Howl… - Classical and Quantum …, 2023 - iopscience.iop.org
Gravity mediated entanglement (GME) has been proposed as the first experimentally
testable signature of quantum gravity. However, to what extent the effect is due to quantum …