Benchmarks for quantum communication via gravity
Quantum Physics
2026-02-11 v1 General Relativity and Quantum Cosmology
Abstract
We establish limitations and bounds on the transmission of quantum states between gravitationally interacting mechanical oscillators under different models of gravity. This provides benchmarks that can enable tests for quantum features of gravity. Our proposal does not require the measurement of gravitationally induced entanglement and only requires final measurements of a single subsystem. We discuss bounds for classical models based on local operations and classical communication when considering coherent-state alphabets, and we discuss the transfer of quantum squeezing for falsifying the Schr\"odinger-Newton model.
Cite
@article{arxiv.2503.03585,
title = {Benchmarks for quantum communication via gravity},
author = {Kristian Toccacelo and Ulrik Lund Andersen and Jonatan Bohr Brask},
journal= {arXiv preprint arXiv:2503.03585},
year = {2026}
}
Comments
13 pages, 6 figures