SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 45: Photonics III
Q 45.6: Vortrag
Donnerstag, 9. März 2023, 12:15–12:30, A320
Optical solitons in curved spacetime — Felix Spengler1, •Alessio Belenchia1,2, Dennis Rätzel3,4, and Daniel Braun1 — 1Institut für Theoretische Physik, Eberhard-Karls-Universität Tübingen, 72076 Tübingen, Germany — 2Centre for Theoretical Atomic, Molecular, and Optical Physics, School of Mathematics and Physics, Queens University, Belfast BT7 1NN, United Kingdom — 3ZARM, University of Bremen, Am Fallturm 2, 28359 Bremen, Germany — 4Humboldt Universität zu Berlin, Institut für Physik, Newtonstraße 15, 12489 Berlin, Germany
From the seminal work of Plebanski in the '60s, we know that Maxwell equations in vacuum curved spacetime are equivalent to flat-spacetime Maxwell equations in the presence of a bi-anisotropic moving medium whose dielectric permittivity and magnetic permeability are determined entirely by the space-time metric. We will use this insight in order to describe light propagation in a non-linear stationary medium in curved spacetime. We will focus on the case of a weak gravitational field and, via a non-linear Schrödinger equation, describe the propagation of an optical pulse in an effective, gradient-index medium in flat spacetime, which encodes both the material properties and curved spacetime effects. Furthermore, in analyzing the special case of propagation in a 1D optical fiber, we will also include the effect of mechanical deformations and show it to be the dominant effect for a fiber oriented in the radial direction in Schwarzschild spacetime.