Update Project1.do.txt

Author: mhjensen

doc/src/Projects/2026/Project1/Project1.do.txt

@@ -22,7 +22,9 @@ thereafter on the second qubit. The measurements should be performed
 several times and it is the average results of these measurements
 which should be discussed and presented.
 
-Compare your code with the results obtained using for example software like _Qiskit_.
+For the Bell states (one of your choice), you should also write a code which traces out the density matrix for one subsystem and calculate the von Neumann entropy and discuss the results.
+
+#You can compare your code with the results obtained using for example software like _Qiskit_.
 
 
 
@@ -117,9 +119,9 @@ Comment your results.
 Implement now the variational quantum eigensolver (VQE) for the above
 Hamiltonian and set up the circuit(s) which is(are) needed in order to find
 the eigenvalues of this system. Discuss the results and compare these
-with those from part b). Feel free to use either _Qiskit_ or your own
-code (based on the setup from part a)) or both approaches. Discuss
-your results.
+with those from part b). You have to write your own code for the VQE but you can compare your code
+with either _Qiskit_ or other software libraries like _Pennylane_ or other.
+Discuss your results.
 
 
 ===== Part d) (score 15pt) =====