Gate-tunable phase transition in a bosonic Su-Schrieffer-Heeger chain
arxiv(2024)
摘要
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.
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