Suppression of Interband Heating for Random Driving

Phys Rev Lett. 2022 Sep 16;129(12):120605. doi: 10.1103/PhysRevLett.129.120605.

Abstract

Heating to high-lying states strongly limits the experimental observation of driving induced nonequilibrium phenomena, particularly when the drive has a broad spectrum. Here we show that, for entire families of structured random drives known as random multipolar drives, particle excitation to higher bands can be well controlled even away from a high-frequency driving regime. This opens a window for observing drive-induced phenomena in a long-lived prethermal regime in the lowest band.