# Papers explaining how to use ShiftPhase(theta) instruction in Qiskit

When dealing with the energy states, if we apply a rotation in 0-1 space it will affect the space of 1-2 and contrary. However, I am lacking documents about this phase change between these spaces and more info and the ShiftPhase(theta) instruction on Qiskit. Can anyone suggest to me the papers and a clear explanation on how to use ShiftPhase(theta) instruction to affect the whole system phase?