arc.calculations_atom_single.ShirleyMethod.targetShifts#
- ShirleyMethod.targetShifts#
This is the shift of the target state relative to the zero field energy for an applied field of
eField
andfreq
. Given in units of Hz.Note
Accurate calculation of the target shifts relies on the energy ordering of the eigenstates to remain the same. Situations with large shifts can result in re-ordering which makes this calculation (and the associated
transProbs
) invalid. In such a case, it is best to perform a more informed analysis on the base eigenvalues and eigenenergies.