Electron-spin resonance
A resonant oscillating field flips a spin.
$$f_{\rm ESR}=\frac{|g|\mu_B B}{h}$$
Physical intuition
A resonant oscillating field flips a spin.
Deep dive: physical mechanism
Transverse microwave driving produces Rabi oscillations in a rotating frame.
What is measured experimentally?
Rabi chevrons and Ramsey fringes quantify control.
Assumptions, noise and limitations
Off-resonant driving and microwave heating reduce fidelity.
Research and simulation exercise
Numerically integrate a driven two-level Hamiltonian.
Connect the ideas
Explore the chapter overview, learning path, and references.