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@ARTICLE{Schreiber:910812,
author = {Schreiber, Lars and Geck, Lotte},
title = {{S}echs auf einen {S}treich{E}bnen siliziumbasierte
{Q}uantencomputer den {W}eg zur {S}kalierbarkeit?},
journal = {Nature},
volume = {609},
number = {919},
issn = {0028-0836},
address = {London [u.a.]},
publisher = {Nature Publ. Group},
reportid = {FZJ-2022-04162},
year = {2022},
comment = {Universal control of a six-qubit quantum processor in
silicon},
booktitle = {Universal control of a six-qubit
quantum processor in silicon},
abstract = {Future quantum computers capable of solving relevant
problems will require a large number of qubits that can be
operated reliably [1]. However, the requirements of having a
large qubit count and operating with high fidelity are
typically conflicting. Spins in semiconductor quantum dots
show long-term promise [2,3] but demonstrations so far use
between one and four qubits and typically optimize the
fidelity of either single- or two-qubit operations, or
initialization and readout [4-11]. Here, we increase the
number of qubits and simultaneously achieve respectable
fidelities for universal operation, state preparation and
measurement. We design, fabricate and operate a six-qubit
processor with a focus on careful Hamiltonian engineering,
on a high level of abstraction to program the quantum
circuits, and on efficient background calibration, all of
which are essential to achieve high fidelities on this
extended system. State preparation combines initialization
by measurement and real-time feedback with
quantum-non-demolition measurements. These advances will
enable testing of increasingly meaningful quantum protocols
and constitute a major stepping stone towards large-scale
quantum computers.},
cin = {ZEA-2 / PGI-11},
ddc = {500},
cid = {I:(DE-Juel1)ZEA-2-20090406 / I:(DE-Juel1)PGI-11-20170113},
pnm = {5223 - Quantum-Computer Control Systems and Cryoelectronics
(POF4-522)},
pid = {G:(DE-HGF)POF4-5223},
typ = {PUB:(DE-HGF)36 / PUB:(DE-HGF)3 / PUB:(DE-HGF)16},
pubmed = {36171383},
UT = {WOS:000862041000025},
doi = {10.1038/s41586-022-05117-x},
url = {https://juser.fz-juelich.de/record/910812},
}