TY  - CONF
AU  - Alanis Rodriguez, Luis Adrian
AU  - Schell, A. W.
AU  - Bruschi, David Edward
TI  - Introduction to gravitational redshift of quantum photons propagating in curved spacetime
JO  - Journal of physics / Conference Series
VL  - 2531
IS  - 1
SN  - 1742-6588
CY  - Bristol
PB  - IOP Publ.
M1  - FZJ-2023-02798
SP  - 012016 -
PY  - 2023
AB  - Gravitational redshift is discussed in the context of quantum photons propagating in curved spacetime. A brief introduction to modelling realistic photons is first presented and the effect of gravity on the spectrum computed for photons largely confined along the direction of propagation. It is then shown that redshift-induced transformations on photon operators with sharp momenta are not unitary, while a unitary transformation can be constructed for realistic photons with finite bandwidth. The unitary transformation obtained is then characterized as a multimode mixing operation, which is a generalized rotation of the Hilbert-space basis. Finally, applications of these results are discussed with focus on performance of quantum communication protocols, exploitation of the effects for quantum metrology and sensing, as well as potential for tests of fundamental science.
T2  - Avenues of Quantum Field Theory in Curved Spacetime (AQFTCS 2022)
CY  - 14 Sep 2022 - 16 Sep 2022, Genova (Italy)
Y2  - 14 Sep 2022 - 16 Sep 2022
M2  - Genova, Italy
LB  - PUB:(DE-HGF)16 ; PUB:(DE-HGF)8
UR  - <Go to ISI:>//WOS:001018634100016
DO  - DOI:10.1088/1742-6596/2531/1/012016
UR  - https://juser.fz-juelich.de/record/1009456
ER  -