So, I understand that quantum systems can be in superpositions of eigenstates. Why is it that we talk about electrons in hydrogen either being in the 1s orbital, or the 2s, or the 2p, etc.? Could I have an electron that is a superposition of two orbitals, say 1s and 2s?
I know from Griffiths that an incident light wave at the transition frequency causes the electron to be in an oscillating superposition, such that one has to time the measurement just right to catch the electron in a state of high probability with respect to the higher orbital. What if I turn the sinusoidal perturbation off while the electron is still in a superposition?
I've limited the question to hydrogen to avoid getting side tracked by possible discussions of electrons being identical particles, but if there is some interesting insight about multielectron atoms that would also be cool.