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\title{Global Analysis of Transient Grating and Transient Absorption of PbSe Quantum Dots}
\author{Daniel D. Kohler}
\author{Blaise J. Thompson}
\author{John C. Wright}
\affiliation{Department of Chemistry,
	           University of Wisconsin-Madison,
           	 1101 University Ave, 
	           Madison, WI 53706, United States}
\keywords{CMDS, FWM}  % BJT: we need more / better keywords

\date{\today}
\begin{document}

\begin{abstract}
We examine the non-linear response of PbSe quantum dots about the 1S exciton using two-dimensional transient absorption and transient grating techniques.
The combined analysis of both methods provides the complete amplitude and phase of the non-linear susceptibility.
The phased spectra reconcile questions about the relationships between the PbSe quantum dot electronic states and the nature of nonlinearities measured by two-dimensional absorption and transient grating methods.
The fits of the combined dataset reveal and quantify the presence of continuum transitions.
\end{abstract}

\maketitle
\section{Introduction}
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\section{Theory}
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\section{Methods}
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\section{Results}
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\section{Discussion}
	\input{discussion}
\section{Conclusion}
	\input{conclusion}

\begin{acknowledgement}
The authors grateful acknowledge staff scientist Andrei Pakoulev (1960-2014) for insightful conversations and devoted tutelage. We thank Qi Ding for her TEM characterizations of the quantum dot samples.
\end{acknowledgement}

\begin{suppinfo}
lots of data is online
\end{suppinfo}

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