Site-selective particle deposition in periodically driven quantum lattices

TL;DR

This paper shows how site-dependent periodic driving of a quantum lattice can control particle placement at specific sites, enabling potential applications like site-selective loading of ultracold atoms.

Contribution

It introduces a novel method for site-selective manipulation of particles in quantum lattices using frequency-tuned periodic driving.

Findings

Resonant mixing of Floquet-Bloch modes causes site depletion at specific frequencies.

Controlled manipulation of particle distribution on lattice sites achieved.

Potential application in ultracold atom loading into optical lattices.

Abstract

We demonstrate that a site-dependent driving of a periodic potential allows for the controlled manipulation of a quantum particle on length scales of the lattice spacing. Specifically we observe for distinct driving frequencies a near depletion of certain sites which is explained by a resonant mixing of the involved Floquet-Bloch modes occurring at these frequencies. Our results could be exploited as a scheme for a site-selective loading of e.g. ultracold atoms into an optical lattices.