SKM 2021 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 5: Poster Session: Superconductivity
TT 5.22: Poster
Montag, 27. September 2021, 13:30–16:00, P
Microwave photonics in High Kinetic Inductance Microstrip Networks — •Niklas Gaiser1, Samuel Goldstein2, Guy Pardo2, Naftali Kirsh2, Ciprian Padurariu1, Björn Kubala1,3, Nadav Katz2, and Joachim Ankerhold1 — 1ICQ and IQST, University of Ulm, Ulm, Germany — 2The Racah Institute of Physics, The Hebrew University of Jerusalem, Israel — 3Institute of Quantum Technologies, German Aerospace Center (DLR), Ulm, Germany
Microwave photonics based on superconducting circuits is a promising candidate for many quantum-technological applications. Progress towards compact integrated photonics devices in the microwave regime, however, is constrained by their long wavelengths.
Here, we discuss a solution to these difficulties via compact networks of high-kinetic inductance microstrip waveguides and coupling wires with strongly reduced phase velocities experimentally realized in [1]. We describe, how the Kirchhoff equations of a periodic network map to a tight-binding model, which allows a description in term of Bloch waves and band structures, to explain experimental features. Furthermore, we present first steps towards exploiting versatility and unique properties of this new platform - compactness and reduced speed of light, strong nonlinear features, and band-structure design - to develop fundamental building blocks for integrated microwave photonics for technology applications and for exploring fundamental physics in such diverse areas as non-linear waves and topological lattice phases.
[1] S. Goldstein, G. Pardo, N. Kirsh, N. Gaiser, C. Padurariu, B. Kubala, J. Ankerhold, and N. Katz, arXiv:2106.15951