%0 Journal Article
%A Bruschi, David Edward
%A Schell, Andreas Wolfgang
%T Gravitational Redshift Induces Quantum Interference
%J Annalen der Physik
%V 535
%N 1
%@ 0003-3804
%C Leipzig
%I Barth
%M FZJ-2022-05954
%P 2200468
%D 2023
%X Quantum field theory in curved spacetime is used to show that gravitational redshift induces a unitary transformation on the quantum state of propagating photons. It is found that the transformation is a mode-mixing operation, and a protocol that exploits gravity to induce a Hong–Ou–Mandel-like interference effect on the state of two photons is devised. It is discussed how the results of this work can provide a demonstration of quantum field theory in curved spacetime.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000897149800001
%R 10.1002/andp.202200468
%U https://juser.fz-juelich.de/record/916123