Fast Transport of Trapped Ultracold Atoms Using Shortcuts-to-Adiabaticity by Counterdiabatic Driving

TL;DR

This paper demonstrates numerically that shortcuts-to-adiabaticity via counterdiabatic driving enable rapid transport of trapped Bose-Einstein condensates, with a minimum time limit consistent with quantum speed limits.

Contribution

It introduces a numerical study of fast BEC transport using STA with counterdiabatic driving, comparing it to constant-acceleration schemes under realistic experimental conditions.

Findings

Existence of a minimum transport time consistent with quantum speed limits

STA achieves faster transport than constant-acceleration schemes

Transport success depends on trap depth, length, and duration

Abstract

We numerically study the fast spatial transport of a trapped Bose-Einstein condensate (BEC) using shortcuts-to-adiabaticity (STA) by counterdiabatic driving (CD). The trapping potential and the required auxiliary potential were simulated as painted potentials. We compared STA transport to transport that follows a constant-acceleration scheme (CA). Experimentally feasible values of trap depth and atom number were used in the 2D Gross-Pitaevskii equation (GPE) simulations. Different transport times, trap depths, and trap lengths were investigated. In all simulations, there exists a minimum amount of time necessary for fast transport, which is consistent with previous results from quantum speed limit studies.