Abstract
Topological insulators occupy a prominent position in the realm of condensed matter physics.Nevertheless,the pres-ence of strong disorder has the potential to disrupt the integrity of topological states,leading to the localization of all states.This study delves into the intricate interplay between topology and localization within the one-dimensional Su-Schrieffer-Heeger(SSH)model,which incorporates controllable off-diagonal quasi-periodic modulations on superconducting circuits.Through the application of external alternating current(ac)magnetic fluxes,each transmon undergoes controlled driving,enabling independent tuning of all coupling strengths.Within a framework of this model,we construct comprehensive phase diagrams delineating regions characterized by extended topologically nontrivial states,critical localization,and co-existing topological and critical localization phases.The paper also addresses the dynamics of qubit excitations,elucidating distinct quantum state transfers resulting from the intricate interplay between topology and localization.Additionally,we propose a method for detecting diverse quantum phases utilizing existing experimental setups.
基金项目
山西省自然科学基金(202103021223010)
NETL
NSTL
万方数据