A Review of Geometric Optimal Control for Quantum Systems in Nuclear Magnetic Resonance

Figure 7

Evolution of the control field 𝑢 for different values of the homotopy parameter 𝜆, which is equal to 0, 0.6, 0.8, 0.9 from (a) to (d). The transfer time normalized to 1 is equal to 2𝑇_min.

(a)

(b)

(c)

(d)