Gate-tunable phase transition in a bosonic Su-Schrieffer-Heeger chain

Metamaterials engineered to host topological states of matter in controllable quantum systems hold promise for the advancement of quantum simulations and quantum computing technologies. In this context, the Su-Schrieffer-Heeger (SSH) model has gained prominence due to its simplicity and practical ap...

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Bibliographic Details
Published inarXiv.org
Main Authors Lukas Johannes Splitthoff, Miguel Carrera Belo, Jin, Guliuxin, Li, Yu, Greplova, Eliska, Christian Kraglund Andersen
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 10.04.2024
Subjects
Controllability
Coupling
Lattices
Metamaterials
Nanowires
Phase transitions
Quantum computing
Superconductivity
Topology
Unit cell
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Summary:Metamaterials engineered to host topological states of matter in controllable quantum systems hold promise for the advancement of quantum simulations and quantum computing technologies. In this context, the Su-Schrieffer-Heeger (SSH) model has gained prominence due to its simplicity and practical applications. Here, we present the implementation of a gate-tunable, five-unit-cell bosonic SSH chain on a one-dimensional lattice of superconducting resonators. We achieve electrostatic control over the inductive intra-cell coupling using semiconductor nanowire junctions, which enables the spectroscopic observation of a transition from a trivial to a topological phase in the engineered metamaterial. In contrast to prior work, our approach offers precise and independent in-situ tuning of the coupling parameters. Finally, we discuss the robustness of the topological edge state against various disorder realizations. Our results supplement efforts towards gate-controlled superconducting electronics and large controllable bosonic lattices to enable quantum simulations.
ISSN:2331-8422