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QI: Fachverband Quanteninformation
QI 18: Poster II
QI 18.2: Poster
Wednesday, March 20, 2024, 11:00–14:30, Poster A
Simulating Many-Body Systems using Waveguide Arrays — •Benedikt K. Braumandl1,2,3,4, Johannes Knörzer5, Robert H. Jonsson6, Alexander Szameit7, and Jasmin D. A. Meinecke1,2,4,8 — 1MPI für Quantenoptik, Germany — 2Fakultät für Physik, LMU München, Germany — 3Fakultät für Physik, TU München, Munich, Germany — 4Munich Center for Quantum Science and Technology, Germany — 5ITS, ETH Zürich, Switzerland — 6Nordita, KTH Stockholm, Sweden — 7Institut für Physik, Universität Rostock, Germany — 8Institut für Festkörperphysik, TU Berlin, Germany
The study of quantum many-body systems poses an interesting yet difficult task of current research. Often, these complex systems cannot directly be implemented experimentally, even when using state of the art technology. Nevertheless, for some systems, this problem can be evaded by employing mathematical mappings to simpler geometries. The modified version can then be easily implemented in more accessible platforms such as waveguide arrays. Our research focuses on the design and experimental implementation of such arrays for the simulation of complex many-body systems. Using this platform, we can exploit the beneficial properties of photons such as long coherence times and high controllability. In particular, we simulate the dynamics of a giant atom coupled to a waveguide at various coupling points – a system that exhibits a phenomenon known as oscillating bound states [1].
[1] D. Noachtar et al. “Nonperturbative treatment of giant atoms using chain transformations”. In Phys. Rev. A 106.1 (2022).
Keywords: Giant Atoms; Oscillating Bound States; Waveguide Arrays; Bogoliubov Transformation; Lanczos Transformation