Bonn 2025 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 62: Poster – Quantum Information Technologies (joint session Q/QI)
Q 62.39: Poster
Thursday, March 13, 2025, 17:00–19:00, Tent
Simulating a Many-Body System with Waveguide Arrays — •Florian Huber1,2,3, Benedikt Braumandl1,2,3,4, Carlotta Versmold1,2,3, Jan Dziewior1,2,3, Robert Jonsson5, Johannes Knörzer6, Alexander Szameit7, and Jasmin Meinecke1,2,3,8 — 1Max-Planck-Institut für Quantenoptik, Germany — 2Ludwig- Maximilians-Universität, Germany — 3Munich Center for Quan- tum Science and Technology, Germany — 4Technische Universität München, Germany — 5Nordita, KTH Royal Institute of Technology and Stockholm University, Sweden — 6ETH Zurich, Switzerland — 7Universität Rostock, Germany — 8Technische Universität Berlin, Germany
Waveguide arrays, femtosecond laser-written into fused silica, are a versatile, still well-controllable simulation platform. If the distance between the laser written channels is large compared to the transversal mode size of each waveguide the system can be described by a nearest neighbor coupling Hamiltonian. The possibility to change the propagation and coupling constants in the manufacturing process allows the simulation of a large class of tridiagonal Hamiltonians. In our case the coupling and propagation constants of the waveguide array describing a giant atom system can be found by applying a Lanczos transformation to its interaction Hamiltonian. We report on the current progress of the simulation of oscillating bound states of a giant atom coupled to a waveguide using waveguide arrays as a simulation platform.
Keywords: Waveguide Arrays; Giant Atom; Quantum Simulation