<?xml version='1.0' encoding='UTF-8'?><codeBook xmlns="ddi:codebook:2_5" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="ddi:codebook:2_5 https://ddialliance.org/Specification/DDI-Codebook/2.5/XMLSchema/codebook.xsd" version="2.5"><docDscr><citation><titlStmt><titl>Spectroscopy Data and Model Parameters for: Observation of Josephson Harmonics in Tunnel Junctions</titl><IDNo agency="DOI">doi:10.26165/JUELICH-DATA/LGRHUH</IDNo></titlStmt><distStmt><distrbtr source="archive">Jülich DATA</distrbtr><distDate>2023-08-14</distDate></distStmt><verStmt source="DVN"><version date="2023-11-29" type="RELEASED">2</version></verStmt><biblCit>Willsch, Dennis; Rieger, Dennis, 2023, "Spectroscopy Data and Model Parameters for: Observation of Josephson Harmonics in Tunnel Junctions", https://doi.org/10.26165/JUELICH-DATA/LGRHUH, Jülich DATA, V2</biblCit></citation></docDscr><stdyDscr><citation><titlStmt><titl>Spectroscopy Data and Model Parameters for: Observation of Josephson Harmonics in Tunnel Junctions</titl><IDNo agency="DOI">doi:10.26165/JUELICH-DATA/LGRHUH</IDNo></titlStmt><rspStmt><AuthEnty affiliation="JSC">Willsch, Dennis</AuthEnty><AuthEnty affiliation="KIT">Rieger, Dennis</AuthEnty></rspStmt><prodStmt><grantNo agency="GCS/NIC">ehqcs</grantNo></prodStmt><distStmt><distrbtr source="archive">Jülich DATA</distrbtr><contact affiliation="JSC" email="d.willsch@fz-juelich.de">Willsch, Dennis</contact><depositr>Willsch, Dennis</depositr><depDate>2023-06-28</depDate></distStmt></citation><stdyInfo><subject><keyword>Mathematical Sciences</keyword><keyword>Physics</keyword></subject><abstract>This repository contains the spectroscopy data and the model parameters along with a Jupyter notebook that demonstrates how to diagonalize the transmon-resonator Hamiltonians using tensorflow, verify the model parameters, and reproduce some of the figures from the corresponding paper.</abstract><sumDscr/><notes>The repository is accessible at https://jugit.fz-juelich.de/qip/josephson-harmonics</notes></stdyInfo><method><dataColl><sources/></dataColl><anlyInfo/></method><dataAccs><notes type="DVN:TOU" level="dv">CC0 Waiver</notes><setAvail/><useStmt/></dataAccs><othrStdyMat/></stdyDscr><otherMat ID="f14249" URI="https://data.fz-juelich.de/api/access/datafile/14249" level="datafile"><labl>README.txt</labl><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">text/plain</notes></otherMat></codeBook>