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@ARTICLE{Jerger:1041442,
author = {Jerger, M. and Motzoi, F. and Gao, Yuan and Dickel, C. and
Buchmann, L. and Bengtsson, A. and Tancredi, G. and Warren,
C. W. and Bylander, J. and DiVincenzo, D. and Barends, R.
and Bushev, P. A.},
title = {{D}ispersive {Q}ubit {R}eadout with {I}ntrinsic {R}esonator
{R}eset},
publisher = {arXiv},
reportid = {FZJ-2025-02246},
year = {2024},
abstract = {A key challenge in quantum computing is speeding up
measurement and initialization. Here, we experimentally
demonstrate a dispersive measurement method for
superconducting qubits that simultaneously measures the
qubit and returns the readout resonator to its initial
state. The approach is based on universal analytical pulses
and requires knowledge of the qubit and resonator
parameters, but needs no direct optimization of the pulse
shape, even when accounting for the nonlinearity of the
system. Moreover, the method generalizes to measuring an
arbitrary number of modes and states. For the qubit readout,
we can drive the resonator to $\sim 10^2$ photons and back
to $\sim 10^{-3}$ photons in less than $3 κ^{-1}$, while
still achieving a $T_1$-limited assignment error below 1\\%.
We also present universal pulse shapes and experimental
results for qutrit readout.},
keywords = {Quantum Physics (quant-ph) (Other) / Superconductivity
(cond-mat.supr-con) (Other) / Applied Physics
(physics.app-ph) (Other) / FOS: Physical sciences (Other)},
cin = {PGI-8 / PGI-13 / PGI-11 / PGI-2},
cid = {I:(DE-Juel1)PGI-8-20190808 / I:(DE-Juel1)PGI-13-20210701 /
I:(DE-Juel1)PGI-11-20170113 / I:(DE-Juel1)PGI-2-20110106},
pnm = {5221 - Advanced Solid-State Qubits and Qubit Systems
(POF4-522) / OpenSuperQPlus100 - Open Superconducting
Quantum Computers (OpenSuperQPlus) (101113946) / QCFD -
Quantum Computational Fluid Dynamics (101080085) / EXC
2004: Matter and Light for Quantum Computing (ML4Q)
(390534769) / Verbundprojekt: German Quantum Computer based
on Superconducting Qubits (GEQCOS) - Teilvorhaben:
Charakterisierung, Kontrolle und Auslese (13N15685) / BMBF
13N16149 - QSolid - Quantencomputer im Festkörper
(BMBF-13N16149)},
pid = {G:(DE-HGF)POF4-5221 / G:(EU-Grant)101113946 /
G:(EU-Grant)101080085 / G:(BMBF)390534769 / G:(BMBF)13N15685
/ G:(DE-Juel1)BMBF-13N16149},
typ = {PUB:(DE-HGF)25},
doi = {10.48550/ARXIV.2406.04891},
url = {https://juser.fz-juelich.de/record/1041442},
}