Mainz 2017 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 55: Quantum Computing II

Q 55.1: Vortrag

Freitag, 10. März 2017, 14:30–14:45, P 2

Estimating the error of a quantum simulator by additional measurments — Iris Schwenk, Sebastian Zanker, Jan Reiner, Juha Leppakangas, and •Michael Marthaler — Institut für Theoretische Festkörperphysik, Karlsruhe Institute of Technology, D-76128 Karlsruhe, Germany

We study an analog quantum simulator coupled to a reservoir with a known spectral density. The reservoir can cause decay and decoherence. The quantum simulator is used to measure an operator average, which can not be calculated using any classical means. Since we can not predict the result it is difficult to know the effect of the environment. Especially, we can not know whether the perturbation is small or if the actual result of the measurement is in fact very different from the ideal system we intend to study. We show that it is possible to use a perturbative approach which contains only measurable quantities to estimate the size of the error.