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arXiv · 2002.04612

Minimum Hardware Requirements for Hybrid Quantum-Classical DMFT

Ben Jaderberg·Abhishek Agarwal·Karsten Leonhardt·Martin Kiffner·Dieter Jaksch
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Abstract

We numerically emulate noisy intermediate-scale quantum (NISQ) devices and determine the minimal hardware requirements for two-site hybrid quantum-classical dynamical mean-field theory (DMFT). We develop a circuit recompilation algorithm which significantly reduces the number of quantum gates of the DMFT algorithm and find that the quantum-classical algorithm converges if the two-qubit gate fidelities are larger than 99%. The converged results agree with the exact solution within 10%, and perfect agreement within noise-induced error margins can be obtained for two-qubit gate fidelities exceeding 99.9%. By comparison, the quantum-classical algorithm without circuit recompilation requires a two-qubit gate fidelity of at least 99.999% to achieve perfect agreement with the exact solution. We thus find quantum-classical DMFT calculations can be run on the next generation of NISQ devices if combined with the recompilation techniques developed in this work.

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Ben Jaderberg, Abhishek Agarwal, Karsten Leonhardt, Martin Kiffner, Dieter Jaksch. 2020-06-18. Minimum Hardware Requirements for Hybrid Quantum-Classical DMFT. https://doi.org/10.1088/2058-9565%2Fab972b

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