Fast Frictionless Expansion of an Optical Lattice

TL;DR

This paper presents a method for rapidly expanding an optical lattice without exciting the atoms, maintaining the initial quantum state, and analyzes effects of external forces and interactions.

Contribution

It introduces a trajectory design for fast, frictionless expansion of optical lattices with variable spacing, ensuring state preservation.

Findings

Successful design of expansion trajectories preserving quantum states.

Analysis of external force effects on expansion process.

Impact of nonlinear interactions on expansion fidelity.

Abstract

We investigate fast frictionless expansion of an optical lattice with dynamically variable spacing (accordion lattice). We design an expansion trajectory that yields a final state identical to the initial state up to an irrelevant phase factor. We discuss the effect of additional force and nonlinear interaction on the fast frictionless expansion.