Locally Mediated Entanglement in Linearized Quantum Gravity
- Author(s)
- Marios Christodoulou, Andrea Di Biagio, Markus Aspelmeyer, Časlav Brukner, Carlo Rovelli, Richard Howl
- Abstract
The current interest in laboratory detection of entanglement mediated by gravity was sparked by an information-theoretic argument: entanglement mediated by a local field certifies that the field is not classical. Previous derivations of the effect modeled gravity as instantaneous; here we derive it from linearized quantum general relativity while keeping Lorentz invariance explicit, using the path-integral formalism. In this framework, entanglement is clearly mediated by a quantum feature of the field. We also point out the possibility of observing "retarded"entanglement, which cannot be explained by an instantaneous interaction. This is a difficult experiment for gravity, but is plausible for the analogous electromagnetic case.
- Organisation(s)
- Research Network Quantum Aspects of Space Time, Quantum Optics, Quantum Nanophysics and Quantum Information
- External organisation(s)
- Österreichische Akademie der Wissenschaften (ÖAW), Università degli Studi di Roma La Sapienza, Université de Toulon, Perimeter Institute for Theoretical Physics, University of Oxford, University of Hong Kong, University of Western Ontario
- Journal
- Physical Review Letters
- Volume
- 130
- No. of pages
- 7
- ISSN
- 0031-9007
- DOI
- https://doi.org/10.48550/arXiv.2202.03368
- Publication date
- 03-2022
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103025 Quantum mechanics, 103028 Theory of relativity
- Keywords
- ASJC Scopus subject areas
- Physics and Astronomy(all)
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/locally-mediated-entanglement-in-linearized-quantum-gravity(1d9b1cca-c518-49fb-adfe-851342d1c5e6).html