# Efficient and robust estimation of many-qubit Hamiltonians

@inproceedings{Francca2022EfficientAR, title={Efficient and robust estimation of many-qubit Hamiltonians}, author={Daniel Stilck Francca and Liubov Markovich and Viatcheslav V. Dobrovitski and Albert H. Werner and Johannes Borregaard}, year={2022} }

Characterizing the interactions and dynamics of quantum mechanical systems is an essential task in the development of quantum technologies. We propose a novel protocol for estimating the underlying Hamiltonian dynamics and Markovian noise of a multi-qubit device. It is based on the eﬃcient estimation of the time-derivatives of few qubit observables using polynomial interpolation. For ﬁnite range dynamics, our protocol exponentially improves the necessary time-resolution of the measurements and…

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