Measuring space-time curvature using maximally path-entangled quantum states

Autor(en)

Thomas B. Mieling, Christopher Hilweg, Philip Walther

Abstrakt

Experiments at the interface of quantum field theory and general relativity would greatly benefit theoretical research towards their unification. The gravitational aspects of quantum experiments performed so far can be explained either within Newtonian gravity or by Einstein's equivalence principle. Here, we describe a way to measure components of the Riemann curvature tensor with maximally path-entangled quantum states of light. We show that the entanglement-induced increase in sensitivity also holds for gravitationally induced phases in Mach-Zehnder interferometers. As a result, the height difference between the two interferometer arms necessary to rule out flat space-time by measuring gravity gradients can be significantly reduced.

Organisation(en)

Gravitationsphysik, Forschungsverbund Quantum Aspects of Space Time, Quantenoptik, Quantennanophysik und Quanteninformation

Journal

Physical Review A

Band

106

Anzahl der Seiten

5

ISSN

2469-9926

DOI

https://doi.org/10.1103/PhysRevA.106.L031701

Publikationsdatum

09-2022

Peer-reviewed

Ja

ÖFOS 2012

103024 Quantenfeldtheorie, 103026 Quantenoptik, 103028 Relativitätstheorie

Schlagwörter

ASJC Scopus Sachgebiete

Atomic and Molecular Physics, and Optics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/98e4203c-6999-4b0c-8dc1-b24328dae201