Digital quantum magnetism at the frontier of classical simulations
THIS IS A PRESS STATEMENT BY FERMIONIQ
Fermioniq is honoured to have been part of a collaboration led by Quantinuum – together with TUM, MCQST, Caltech and EPFL – which demonstrated the capabilities of Quantinuum’s H2 quantum computer for simulating quantum magnetism at the limit of classical methods. This work is an important step on the path towards achieving quantum advantage for a task of practical utility.
Fermioniq’s quantum circuit emulator Ava provided a benchmark against which the quantum simulations could be compared, further demonstrating the use of quantum emulators as tools to guide and accelerate quantum computing development.
Digitized quantum dynamics
Quantinuum’s H2 quantum computer was used to simulate digitized dynamics of the quantum Ising model (Fig. 1), establishing quantum computers as powerful tools for studying continuous-time dynamics and demonstrating their potential to benchmark classical heuristics in a regime of scale and complexity where no known classical methods are both efficient and trustworthy.
This work provides the first evidence for the emergence of stable equilibrium behavior from digitized quantum dynamics at a scale for which numerically exact classical simulations appear to be extraordinarily difficult. While it is hard to predict the future capabilities of classical heuristics, a careful analysis of the limitations of numerous approximate methods indicates that the quantum data provided by H2 should be regarded as complementary to such heuristics, and is arguably the most convincing standard to which they should be compared.
Fermioniq’s quantum circuit emulator Ava played a pivotal role:
In guiding the project in the beginning and helping to identify parameter regimes that are challenging to simulate classically,
In benchmarking the zero-noise extrapolation method used for H2,
As one of the state-of-the-art classical benchmark methods to compare H2 against.
You can read the full technical paper here. For more details on the quantum Ising model, and how Ava can be used to simulate it, read our blog post.
