Hamiltonian learning for quantum error correction

Autor: Agnes Valenti, Evert van Nieuwenburg, Sebastian Huber, Eliska Greplova
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Physical Review Research, Vol 1, Iss 3, p 033092 (2019)
Druh dokumentu: article
ISSN: 2643-1564
DOI: 10.1103/PhysRevResearch.1.033092
Popis: The efficient validation of quantum devices is critical for emerging technological applications. In a wide class of use cases the precise engineering of a Hamiltonian is required both for the implementation of gate-based quantum information processing as well as for reliable quantum memories. Inferring the experimentally realized Hamiltonian through a scalable number of measurements constitutes the challenging task of Hamiltonian learning. In particular, assessing the quality of the implementation of topological codes is essential for quantum error correction. Here, we introduce a neural-net-based approach to this challenge. We capitalize on a family of exactly solvable models to train our algorithm and generalize to a broad class of experimentally relevant sources of errors. We discuss how our algorithm scales with system size and analyze its resilience toward various noise sources.
Databáze: Directory of Open Access Journals