ABSTRACT
T1 The lifetime, or inverse decay rate, of the population inversion of a two-level atom. Also known as γ‖. In the radiatively broadened case, we have T1 = 2T2.
T2 The inverse decay rate of the induced dipole moment of a two-level atom. Also known as γ⊥. In general 1/T1 = 1/2T2 + 1/Tdephase.
