It can be seen that this system is exactly the same as the two-state system discussed in the previous section, provided that the make the following identifications: \[\begin{aligned} \psi_1 &\rightarr...It can be seen that this system is exactly the same as the two-state system discussed in the previous section, provided that the make the following identifications: \[\begin{aligned} \psi_1 &\rightarrow \chi_+,\\[0.5ex] \psi_2&\rightarrow \chi_-,\\[0.5ex] \omega_{21} &\rightarrow \frac{g\,e\,B_0}{2\,m},\\[0.5ex] \gamma&\rightarrow -\frac{g\,e\,B_1}{4\,m}.\end{aligned}\] The resonant frequency, \(\omega_{21}\), is simply the spin precession frequency in a uniform magnetic field of strength \(B_0…
