Interferometry of Entangled Quantum States of Light in Curved Space-Time

Date: July 6, 2022
Time: 05:30 CEST
Event: 23rd International Conference on General Relativity and Gravitation (GR23)
Location: Beijing, China

Abstract: Precision quantum interferometry provides a viable way to probe the behavior of single photons and entangled photon pairs in gravitational fields: a domain that defies a purely Newtonian description. While currently planned experiments aiming to detect such effects at the laboratory-scale are explicable using the weak equivalence principle, larger-scale experiments have the potential to detect gravitationally induced quantum interference in which space-time curvature matters. In this talk, I present the basic mechanisms underlying such experiments and explain how maximally path-entangled NOON states could be used to demonstrate Riemann curvature, thereby propping the interplay of quantum field theory and general relativity beyond the weak equivalence principle. This talk is based on joint work with C. Hilweg and P. Walther (arXiv:2202.12562)

Relevant publication: Measuring Space-Time Curvature using Maximally Path-Entangled Quantum States