Dresden 2026 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 43: Superconducting Electronics: Qubits
TT 43.11: Talk
Wednesday, March 11, 2026, 12:15–12:30, CHE/0089
Strongly interacting phases of spins and bosons in circuit QED — •Adrian Paul Misselwitz1,2,3, Jacquelin Luneau1,2,3, Enrico Di Benedetto4, and Peter Rabl1,2,3 — 1Technical University of Munich, TUM School of Natural Sciences, Physics Department, 85748 Garching, Germany — 2Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany — 3Munich Center for Quantum Science and Technology (MCQST), 80799 Munich, Germany — 4Università degli Studi di Palermo, Dipartimento di Fisica e Chimica--Emilio Segrè, Via Archirafi 36, I-90123 Palermo, Italy
The scalability of superconducting circuit hardware is a promising route for the implementation and exploration of complex many-body systems. In this work, we study emerging phases of matter in a waveguide QED framework, arising from the interplay of competing forces of atom-bound state localization and Kerr-type photon-photon interactions. In addition, we extend our analysis to 1D flatband systems, map out the phase space and characterize the flatband states, which take on a unique form due to the nonlinear photonic dynamics of circuit QED.
Keywords: circuit QED; waveguide QED; Phases of Matter; Flatband