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

verfasst von

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.

Organisationseinheit(en)

QuantumFrontiers

Externe Organisation(en)

Zentrum für angewandte Raumfahrt­technologie und Mikro­gravitation (ZARM)

Typ

Artikel

Journal

Quantum

Band

8

ISSN

2521-327X

Publikationsdatum

20.02.2024

Publikationsstatus

Elektronisch veröffentlicht (E-Pub)

ASJC Scopus Sachgebiete

Atom- und Molekularphysik sowie Optik, Physik und Astronomie (sonstige)

Elektronische Version(en)

https://doi.org/10.22331/q-2024-02-29-1273 (Zugang: Offen)