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Genetic Algorithms for Digital Quantum Simulations.

U. L. Heras,U. Alvarez-Rodriguez,2 Authors,M. Sanz

2015 · DOI: 10.1103/PhysRevLett.116.230504
Physical Review Letters · 58 Citations

TLDR

It is shown that genetic algorithms can be employed to increase the fidelity and optimize the resource requirements of digital quantum simulation protocols while adapting naturally to the experimental constraints, and it is proved that the proposed modular gates are resilient against different gate errors.

Abstract

We propose genetic algorithms, which are robust optimization techniques inspired by natural selection, to enhance the versatility of digital quantum simulations. In this sense, we show that genetic algorithms can be employed to increase the fidelity and optimize the resource requirements of digital quantum simulation protocols while adapting naturally to the experimental constraints. Furthermore, this method allows us to reduce not only digital errors but also experimental errors in quantum gates. Indeed, by adding ancillary qubits, we design a modular gate made out of imperfect gates, whose fidelity is larger than the fidelity of any of the constituent gates. Finally, we prove that the proposed modular gates are resilient against different gate errors.