2014/08/31 by David Edward Bruschi, Animesh Datta, Rupert Ursin +2 · 3 citations
Engineering · Mathematics · Physics and Astronomy · #Classical mechanics #Computer science #Curvature #General relativity #Geometry #Geophysics and Sensor Technology #Mathematics #Maxwell's equations in curved spacetime #Measure (data warehouse) #Mechanical and Optical Resonators #Physics #Quantum #Quantum Electrodynamics and Casimir Effect #Quantum field theory in curved spacetime #Quantum gravity #Quantum mechanics #Schwarzschild metric #Schwarzschild radius #Spacetime #Spacetime topology #gr-qc #quant-ph
paper · pdf · doi:10.1103/physrevd.90.124001
published as Phys. Rev. D 90, 124001 (2014) · 11 pages, no figures. Ivette Fuentes previously published as Ivette Fuentes-Guridi and Ivette Fuentes-Schuller
arxiv created 2014/08/31 · openalex publication_date 2014/12/01 · arxiv updated 2014/12/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We propose a quantum experiment to measure with high precision the Schwarzschild spacetime parameters of the Earth. The scheme can also be applied to measure distances by taking into account the curvature of the Earth's spacetime. As a wave packet of (entangled) light is sent from the Earth to a satellite it is redshifted and deformed due to the curvature of spacetime. Measurements after the propagation enable the estimation of the spacetime parameters. We compare our results with the state of the art, which involves classical measurement methods, and discuss what developments are required in space-based quantum experiments to improve on the current measurement of the Schwarzschild radius of the Earth.