2) A quantum system is modeled by the Hamiltonian matrix
[ 0 h ]
[ h 0 ]
The orthonormal basis states are |1), |2), |3), such that the matrix elements are (1|H|1) = h, (2|H|3) = -h, etc.
i) Find the eigenvalues of H. What are the possible outcomes when the energy is measured?
[2]
ii) Show that the normalized energy eigenstates |a), |b), |c) are
|a) = |1)
|b) = (|2) + |3)
|c) = (|2) - |3)
What are the energies that correspond to these eigenvectors?
[1]
iii) The system initially is prepared as the state |(t=0) = (2|1) + i|2) = √5
Show that
[1]