Optimal control transport of neutral atoms in optical tweezers at finite temperature

Abstract

The transport of neutral atoms in Rydberg quantum computers is a crucial step for the initial arrangement of the grid as well as the dynamic connectivity, recently successfully demonstrated. We study the application of optimal control and the quantum speed limit for the transport of neutral atoms in optical tweezers at finite temperatures and analyze how laser noise affects transport fidelity. Open-loop optimal control significantly enhances transport fidelity, achieving an improvement up to 89% for the lowest analyzed temperature of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"> <a:mrow> <a:mn>1</a:mn> <a:mspace width="0.16em"/> <a:mo>µ</a:mo> <a:mi mathvariant="normal">K</a:mi> </a:mrow> </a:math> for a distance of <d:math xmlns:d="http://www.w3.org/1998/Math/MathML"> <d:mrow> <d:mn>3</d:mn> <d:mspace width="0.16em"/> <d:mo>µ</d:mo> <d:mi mathvariant="normal">m</d:mi> </d:mrow> </d:math> . Furthermore, we simulate how the transport fidelity behaves in release-and-capture measurements, which are realizable in the experiment to estimate transport efficiency and implement closed-loop optimal control. Published by the American Physical Society 2024