Quantum communications and quantum metrology in the spacetime of a rotating planet

Kohlrus, Jan and Bruschi, David Edward and Louko, Jorma and Fuentes, Ivette (2017) Quantum communications and quantum metrology in the spacetime of a rotating planet. EPJ Quantum Technology, 4 . 7/1-7/13. ISSN 2196-0763

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Abstract

We study how quantum systems that propagate in the spacetime of a rotating planet are affected by the curved background. Spacetime curvature affects wavepackets of photons propagating from Earth to a satellite, and the changes in the wavepacket encode the parameters of the spacetime. This allows us to evaluate quantitatively how quantum communications are affected by the curved spacetime background of the Earth and to achieve precise measurements of Earth’s Schwarzschild radius and equatorial angular velocity. We then provide a comparison with the state of the art in parameter estimation obtained through classical means. Satellite to satellite communications and future directions are also discussed.

Item Type: Article
Keywords: Satellite communications; Quantum metrology; Kerr spacetime
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Mathematical Sciences
Identification Number: 10.1140/epjqt/s40507-017-0061-0
Depositing User: Eprints, Support
Date Deposited: 07 Aug 2017 09:46
Last Modified: 12 Oct 2017 23:27
URI: http://eprints.nottingham.ac.uk/id/eprint/44713

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