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@INPROCEEDINGS{Willsch:844146,
author = {Willsch, Dennis and Nocon, Madita and Jin, Fengping and De
Raedt, Hans and Michielsen, Kristel},
title = {{E}rror analysis of gate-based quantum computers with
transmon qubits},
reportid = {FZJ-2018-01612},
year = {2018},
abstract = {Over the past decades, tremendous effort has gone into
building a universal quantum computer. In theory, such a
device can solve certain problems such as factoring
exponentially faster than digital computers. The leading
technological prototypes are based on superconducting
circuits and contain about 10-50 qubits. Controlling these
fragile systems requires an enormous amount of precision,
posing a difficult challenge for the experimentalists. We
study such quantum systems in detail by solving the
time-dependent Schrödinger equation for a generic model
Hamiltonian. For this purpose, we have developed efficient
product-formula algorithms that are tailored to key features
of the model Hamiltonian. This allows us to simulate each
individual voltage pulse that is used in experiments to
realize a certain quantum gate, as dictated by the
computational model of a quantum computer. By optimizing the
pulse parameters, we find that even in the ideal case, the
best pulses still contain undesirable errors in the
realization of the intended quantum gate. The common gate
metrics measured and reported in experiments or computed in
theory are shown to provide insufficient practical
information about the significance of these errors.},
month = {Feb},
date = {2018-02-22},
organization = {NIC Symposium 2018, Jülich (Germany),
22 Feb 2018 - 23 Feb 2018},
subtyp = {Other},
cin = {JSC / JARA-HPC},
cid = {I:(DE-Juel1)JSC-20090406 / $I:(DE-82)080012_20140620$},
pnm = {511 - Computational Science and Mathematical Methods
(POF3-511)},
pid = {G:(DE-HGF)POF3-511},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/844146},
}