Information Content of the Gravitational Field of a Quantum Superposition

Autor(en)

Alessio Belenchia, Robert M. Wald, Flaminia Giacomini, Esteban Castro-Ruiz, Časlav Brukner, Markus Aspelmeyer

Abstrakt

When a massive quantum body is put into a spatial superposition, it is of interest to consider the quantum aspects of the gravitational field sourced by the body. We argue that in order to understand how the body may become entangled with other massive bodies via gravitational interactions, it must be thought of as being entangled with its own Newtonian-like gravitational field. Thus, a Newtonian-like gravitational field must be capable of carrying quantum information. Our analysis supports the view that table-top experiments testing entanglement of systems interacting via gravity do probe the quantum nature of gravity, even if no ``gravitons'' are emitted during the experiment.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation, Forschungsverbund Quantum Aspects of Space Time

Externe Organisation(en)

Queen's University Belfast, University of Chicago, Österreichische Akademie der Wissenschaften (ÖAW)

Journal

International Journal of Modern Physics D

Band

28

Anzahl der Seiten

6

ISSN

0218-2718

DOI

https://doi.org/10.1142/S0218271819430016

Publikationsdatum

06-2019

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik, 103012 Hochenergiephysik, 103028 Relativitätstheorie

Schlagwörter

ASJC Scopus Sachgebiete

Astronomy and Astrophysics, Mathematical Physics, Space and Planetary Science

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/806e5ba1-61de-45b9-8541-93bb71d08fc4