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

Kohlrus, Jan; Bruschi, David Edward; Louko, Jorma; Fuentes, Ivette

Authors

Jan Kohlrus

David Edward Bruschi

Ivette Fuentes



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.

Journal Article Type Article
Publication Date Apr 20, 2017
Journal EPJ Quantum Technology
Electronic ISSN 2196-0763
Publisher EDP Open
Peer Reviewed Peer Reviewed
Volume 4
Article Number 7
APA6 Citation Kohlrus, J., Bruschi, D. E., Louko, J., & Fuentes, I. (2017). Quantum communications and quantum metrology in the spacetime of a rotating planet. EPJ Quantum Technology, 4, https://doi.org/10.1140/epjqt/s40507-017-0061-0
DOI https://doi.org/10.1140/epjqt/s40507-017-0061-0
Keywords Satellite communications; Quantum metrology; Kerr spacetime
Publisher URL https://doi.org/10.1140/epjqt/s40507-017-0061-0
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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