AtomTwin.jl: a physics-native digital twin framework for neutral-atom quantum processors

TL;DR

AtomTwin.jl is an open-source Julia framework that models and simulates neutral-atom quantum processors, enabling hardware-aware quantum protocol development without manual Hamiltonian specification.

Contribution

It introduces a physics-native, extensible simulation framework for neutral-atom quantum devices, integrating detailed physical modeling with high-performance dynamics solvers.

Findings

Benchmarks show competitive performance against existing tools.

Successfully simulated preparation of a logical Bell state in a Ytterbium-171 atom system.

Demonstrated end-to-end application of the framework in quantum state preparation.

Abstract

AtomTwin$.$jl is an open-source Julia package for developing and simulating quantum protocols, hardware configurations and building digital twins for neutral-atom quantum processors and related atomic quantum devices. AtomTwin operates between mathematical models and physical devices; modeling atoms, optical tweezers, laser fields, atomic motion, interactions, and noise processes natively from physical geometry and parameters, without requiring users to define Hamiltonians manually. The package provides hardware-level instruction sequences, high-performance solvers for coupled quantum and classical dynamics, and a ready-to-use model for ytterbium-171 atoms in an extensible framework designed to accommodate a greater variety of atomic species and hardware components in the future. This paper describes the software architecture, performance benchmarks against existing toolboxes, and a demonstrated end-to-end application: preparation of a logical Bell state in the $[[4,2,2]]$ error-detecting code with four $^{171}$Yb atoms in moveable tweezers.