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: E-pub ahead of print
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)