Update week4.do.txt

Author: mhjensen

doc/src/week4/week4.do.txt

@@ -7,7 +7,6 @@ DATE: February 12, 2025
 
 o Reminder from last week on gates and circuits
 o One-qubit and two-qubit gates, background and realizations
-#o Entropy as a measurement of entanglement
 o Simple Hamiltonian systems
 o "Video of lecture to be added":"https://youtu.be/"
 #o "Whiteboard notes":"https://github.com/CompPhysics/QuantumComputingMachineLearning/blob/gh-pages/doc/HandWrittenNotes/2025/NotesFebruary12.pdf"
@@ -36,7 +35,7 @@ physical processes.
 !split
 ===== Structure of the lecture =====
 
-o First we review some of the basic ways of representing the solution to the Schr\"odinger's equation, introducing the so-called intenraction, Heisenberg and Schr\"odinger prictures and unitary transformations.
+o First we review some of the basic ways of representing the solution to the Schr\"odinger equation, introducing the so-called Interaction, Heisenberg and Schr\"odinger prictures and unitary transformations.
 o Secondly, we present examples of physical processes and how they can be represented as unitary operations on a given state.
 o These unitary transformations are then represented as gates. Setting gates together gives us a final circuit which can represent a specific physical system
 
@@ -1479,3 +1478,6 @@ would compute the gradient and thereby find the minimum as function of
 the angles $\theta$ and $\phi$.  This will lead us to the so-called Variational Quantum Eigensolver to be discussed next week.
 
 
+
+
+#o Entropy as a measurement of entanglement