Entanglement dynamics of photon pairs and quantum memories in the gravitational field of the earth
R. Barzel1, M. Gündoğan2,3, M. Krutzik2,3,4, D. Rätzel1,2, and C. Lämmerzahl1,5
Published in:
Quantum, vol. 8, p. 1273, doi:10.22331/q-2024-02-29-1273 (2024).
Abstract:
We investigate the effect of entanglement dynamics due to gravity – the basis of a mechanism of universal decoherence – for photonic states and quantum memories in Mach-Zehnder and Hong-Ou-Mandel interferometry setups in the gravitational field of the earth. We show that chances are good to witness the effect with near-future technology in Hong-Ou-Mandel interferometry. This would represent an experimental test of theoretical modeling combining a multi-particle effect predicted by the quantum theory of light and an effect predicted by general relativity. Our article represents the first analysis of relativistic gravitational effects on space-based quantum memories which are expected to be an important ingredient for global quantum communication networks.
1 ZARM, University of Bremen, Am Fallturm 2, 28359 Bremen, Germany
2 Institut für Physik, Humboldt-Universität zu Berlin, Newtonstraße 15, 12489 Berlin, Germany
3 IRIS Adlershof, Humboldt-Universität zu Berlin, Zum Großen Windkanal 2, 12489 Berlin, Germany
4 Ferdinand-Braun-Institut (FBH), Gustav-Kirchoff-Str. 4, 12489 Berlin, Germany
5 Institute of Physics, Carl von Ossietzky University Oldenburg, Ammerländer Heerstr. 114-118, 26129 Oldenburg, Germany
This Paper is published in Quantum under the Creative Commons Attribution 4.0 International (CC BY 4.0) license. Copyright remains with the original copyright holders such as the authors or their institutions.
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