Anomalous Floquet topological modes on quantum simulators
ORAL
Abstract
We study the dynamics of a collection of engineered Floquet topological phases using superconducting digital quantum simulators. We design a one dimensional topological Floquet insulator which experimentally demonstrates chiral flow—nontrivial particle transport protected by chiral symmetry—with constant-depth quantum circuit optimization. We find that the driving strength acts as a tuning knob to control the resolution of topological modes imaged in the frequency spectrum. We apply our method to realize the dynamics of a one dimensional helical Floquet model exhibiting spin-momentum locking with unidirectional particle motion, and compare with closed system dynamics calculations. Finally, we present the simulated dynamics of an Ising Floquet symmetry-protected topological chain with time-translation symmetry breaking on the boundary.
*This material is based upon work supported by the Sivian Fund and the Paul Dirac Fund at the Institute for Advanced Study and the U.S. Department of Energy, Office of Science, Office of High Energy Physics under Award Number DE-SC0009988 (A.P.). This work is also supported, in part, by an NSF grant OAC-2118061, the Defense Advanced Research Projects Agency (DARPA), Contract No. HR001122C0063, by PNRR-Italy HPC Spoke 10 and by PRIN 2022W9W423 (R.D.F., A.N.). We acknowledge the use of IBM Quantum services for this work, including devices available through Oak Ridge National Laboratory (QCUP CPH150).
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Presenters
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Miguel Mercado
- University of Southern California