1Centre for Quantum Information and Communication, Université Libre de Bruxelles, 1050 Brussels, Belgium.
2Institute for Theoretical Physics, ETH Zürich, 8093 Zürich, Switzerland
3Perimeter Institute for Theoretical Physics, 31 Caroline St. N, Waterloo, Ontario, N2L 2Y5, Canada.
4Aix-Marseille University, Université de Toulon, CPT-CNRS, F-13288 Marseille, France.
5Department of Philosophy and the Rotman Institute of Philosophy, 1151 Richmond St. N London N6A5B7, Canada.
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Abstract
Field mediated entanglement experiments probe the quantum superposition of macroscopically distinct field configurations. We show that this phenomenon can be described by using a transparent quantum field theoretical formulation of electromagnetism and gravity in the field basis. The strength of such a description is that it explicitly displays the superposition of macroscopically distinct states of the field. In the case of (linearised) quantum general relativity, this formulation exhibits the quantum superposition of geometries giving rise to the effect.
Featured image: A pictorial representation of the superposition of two locations of a massive particle, and the corresponding superposition of the gravitational field it generates.
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Cited by
[1] Marios Christodoulou, Andrea Di Biagio, Richard Howl, and Carlo Rovelli, “Gravity entanglement, quantum reference systems, degrees of freedom”, Classical and Quantum Gravity 40 4, 047001 (2023).
[2] Chris Overstreet, Joseph Curti, Minjeong Kim, Peter Asenbaum, Mark A. Kasevich, and Flaminia Giacomini, “Inference of gravitational field superposition from quantum measurements”, arXiv:2209.02214, (2022).
[3] Isaac Layton, Jonathan Oppenheim, and Zachary Weller-Davies, “A healthier semi-classical dynamics”, arXiv:2208.11722, (2022).
[4] Thomas D. Galley, Flaminia Giacomini, and John H. Selby, “Any consistent coupling between classical gravity and quantum matter is fundamentally irreversible”, arXiv:2301.10261, (2023).
[5] Yoshimasa Hidaka, Satoshi Iso, and Kengo Shimada, “Entanglement Generation and Decoherence in a Two-Qubit System Mediated by Relativistic Quantum Field”, arXiv:2211.09441, (2022).
The above citations are from SAO/NASA ADS (last updated successfully 2023-03-20 15:00:56). The list may be incomplete as not all publishers provide suitable and complete citation data.
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