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EPJ QT Highlight - How does Earth’s spacetime deformation affect quantum communications?

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Published on 30 May 2017
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Credit: CQT, National University of Singapore

Jan Kohlrus investigates relativitic effects to consider when setting up quantum communication systems.

The interplay and overlap between relativity and quantum theory are among the most complex and challenging open problems of modern theoretical physics. This grey area has been extensively studied on the theoretical side, sometimes following very speculative and exotic directions, while very few experiments have been proposed in a way that rigorously incorporates relativity and quantum features.

The purpose of our work is to propose feasible experiments that involve quantum fields in a relativistic framework. In our recent article in EPJ Quantum Technology, we study how observers that undergo different motion, and experience different strengths of the gravitational field, measure pulses of light that propagate from one user to another. In particular, we look at quantum communication schemes between Earth and satellite links, as well as between two satellites.

Continue reading Jan’s post here.

Quantum communications and quantum metrology in the spacetime of a rotating planet, Jan Kohlrus, David Edward Bruschi, Jorma Louko and Ivette Fuentes (2017), EPJ Quantum Technology, 4:7, DOI: 10.1140/epjqt/s40507-017-0061-0

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On behalf of the Organizing and Program Committees and Editorial Team of MNPS-2019, Dr. Alexey B. Nadykto, Moscow State Technological University “STANKIN”, Moscow, Russia. EPJ Web of Conferences vol. 224 (2019)

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