Part I: "A perturbed harmonic oscillator"
a) Give at least one strong argument why the harmonic oscillator is such an important quantum system
A 1-dimensional harmonic oscillator with Hamiltonian H = p^2/2m + 1/2mω_0^2x^2, is perturbed by a field given by H' = 1/2mω_0^2x^2 α cos(ωt).
b) If ω = 0 (the field is constant in time) what would be the energy levels of the system?
c) For ω ≠ 0, calculate the probability that the system will make a transition from state N to state M in time t, using first order perturbation theory, given that the system is initially prepared in state ψ_N, or, in Dirac notation, |N⟩. Explain all your steps clearly.
d) How can you maximize the transition amplitude? (give three options)