qkd: Embed graphics as PDF instead of EPS

chapter-qkd/chapter.tex

@@ -965,7 +965,7 @@ feedthrough that improves on the simple helical feedthrough we introduced above.
 
 \begin{figure}
     \centering
-    \includegraphics[width=\textwidth]{schema_wire.eps}
+    \includegraphics[width=\textwidth]{schema_wire.pdf}
     \caption[Offset labyrinth mesh schema with fiber layout]{\figureattrib{schema_wire.svg}}
     \label{qkd_fig_offset_lab_fiber}
 \end{figure}
@@ -1050,13 +1050,13 @@ gears which need to constantly maintain an area of contact, both co-rotating and
 
 \begin{figure}
     \centering
-    \includegraphics[width=\textwidth]{gear_plan_1.eps}
+    \includegraphics[width=\textwidth]{gear_plan_1.pdf}
     \caption[Offset gear mesh assmbly schema]{\figureattrib{gear_plan_1.svg}}
 \end{figure}
 
 \begin{figure}
     \centering
-    \includegraphics[width=\textwidth]{gear_plan_2.eps}
+    \includegraphics[width=\textwidth]{gear_plan_2.pdf}
     \caption[Offset gear mesh schedule]{\figureattrib{gear_plan_2.svg}}
 \end{figure}