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arXiv · 2504.21440

QuantumToolbox.jl: An efficient Julia framework for simulating open quantum systems

Alberto Mercurio·Yi-Te Huang·Li-Xun Cai·Yueh-Nan Chen·Vincenzo Savona·Franco Nori
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Abstract

We present QuantumToolbox$.$jl, an open-source Julia package for simulating open quantum systems. Designed with a syntax familiar to users of QuTiP (Quantum Toolbox in Python), it harnesses Julia's high-performance ecosystem to deliver fast and scalable simulations. The package includes a suite of time-evolution solvers supporting distributed computing and GPU acceleration, enabling efficient simulation of large-scale quantum systems. We also show how QuantumToolbox$.$jl can integrate with automatic differentiation tools, making it well-suited for gradient-based optimization tasks such as quantum optimal control. Benchmark comparisons demonstrate substantial performance gains over existing frameworks. With its flexible design and computational efficiency, QuantumToolbox$.$jl serves as a powerful tool for both theoretical studies and practical applications in quantum science.

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Alberto Mercurio, Yi-Te Huang, Li-Xun Cai, Yueh-Nan Chen, Vincenzo Savona, Franco Nori. 2025-04-30. QuantumToolbox.jl: An efficient Julia framework for simulating open quantum systems. https://doi.org/10.22331/q-2025-09-29-1866

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