Coherent transport by adiabatic passage on atom chips

TL;DR

This paper demonstrates a method for high-fidelity adiabatic transport of single atoms between waveguides on an atom chip, using 3D simulations and GPU computing for realistic and efficient modeling.

Contribution

It provides a detailed example of adiabatic atom transport on atom chips with realistic simulations and a GPU-accelerated method for efficient computation.

Findings

Successful adiabatic transport of single atoms demonstrated

3D simulations confirm feasibility with realistic parameters

GPU computing enables rapid system modeling

Abstract

Adiabatic techniques offer some of the most promising tools to achieve high-fidelity control of the centre-of-mass degree of freedom of single atoms. As their main requirement is to follow an eigenstate of the system, constraints on timing and field strength stability are usually low, especially for trapped systems. In this paper we present a detailed example of a technique to adiabatically transport a single atom between different waveguides on an atom chip. To ensure that all conditions are fulfilled, we carry out fully three dimensional simulations of the system, using experimentally realistic parameters. We also detail our method for simulating the system in very reasonable timescales on a consumer desktop machine by leveraging the power of GPU computing.