Erlangen 2022 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 30: Quantum Optics (Miscellaneous) IV
Q 30.6: Vortrag
Mittwoch, 16. März 2022, 12:00–12:15, Q-H14
Gravitational effects on time-frequency bandwidth relations in Earth-to-space telecommunications — •Mohsen Esmaeilzadeh1, 2, Roy Barzel4, David E. Bruschi3, Claus Lämmerzahl4, Frank K. Wilhelm3, and Andreas W. Schell1, 2 — 1Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig — 2Institute for Solid State Physics, Leibniz University Hannover, Appelstr. 2, 30167 Hannover — 3Institute for Quantum Computing Analytics (PGI-12), Forschungszentrum J*ulich, 52425 Jülich, Germany — 4ZARM, University of Bremen, 28359 Bremen, Germany
We study the space-time curvature effects on satellite communication with single photons. We proposed a model of communication between Earth and the satellite between users using a traveling string of photon pulses. Since our quantum systems propagate in the space-time of a curved background, the propagating wave-packets are deformed because of the influence of the gravitational red-shift that also changes their time-bandwidth relation.
We provide a theoretical understanding of how the gravitational red-shift affects the overlapping pulses. The antibunching behavior of them and the impact of the deformation on the intensity correlation function are studied. Moreover, we try to take the advantage of the Wigner function as a measure for quantumness to investigate the changes in the pulses after getting gravitational red-shift.