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), Sapienza University of Rome, 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://ucrisportal.univie.ac.at/en/publications/locally-mediated-entanglement-in-linearized-quantum-gravity(1d9b1cca-c518-49fb-adfe-851342d1c5e6).html