Half-Integer Quantized Topological Response in Quasiperiodically Driven Quantum Systems
Abstract
A spin strongly driven by two harmonic incommensurate drives can pump energy from one drive to the other at a quantized average rate, in close analogy with the quantum Hall effect. The pumping rate is a nonzero integer in the topological regime, while the trivial regime does not pump. The dynamical transition between the regimes is sharp in the zero-frequency limit and is characterized by a Dirac point in a synthetic band structure. We show that...
Paper Details
Title
Half-Integer Quantized Topological Response in Quasiperiodically Driven Quantum Systems
Published Date
Aug 31, 2020
Journal
Volume
125
Issue
10
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