Entanglement dynamics of photon pairs and quantum memories in the gravitational field of the earth

authored by
Roy Barzel, Mustafa Gündoğan, Markus Krutzik, Dennis Rätzel, Claus Lämmerzahl
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.

Organisation(s)
QuantumFrontiers
External Organisation(s)
Center of Applied Space Technology and Microgravity (ZARM)
Type
Article
Journal
Quantum
Volume
8
ISSN
2521-327X
Publication date
20.02.2024
Publication status
Published
ASJC Scopus subject areas
Atomic and Molecular Physics, and Optics, Physics and Astronomy (miscellaneous)
Electronic version(s)
https://doi.org/10.22331/q-2024-02-29-1273 (Access: Open)