MATLAB programs for broadband population-transfer simulations in multilevel quantum ensembles with time-dependent dispersions

This record contains two MATLAB programs for broadband population-transfer simulations in multilevel quantum ensembles.

Files included:

1. Broadband_population_transfer_control_framework_program_1.m
   Main simulation program for the quadrupolar-MAS example. This program generates the baseline numerical results and the principal simulation figures, including the  central energy levels, dispersion functions, control design, discarded-branch frequency diagnostics, adiabatic-ratio plots, and final fidelity/infidelity over the selected ensemble.

2. Broadband_population_transfer_control_framework_program_2.m
   Additional stress-test simulation program for the same quadrupolar-MAS model. This program generates four additional stress-test figures:

   (i)  comparison with fixed-offset chirped pulse
   (ii) convergence studey with respect to crystallite-orientation sampling
   (iii) bounded-dispersion stress test (ensemble),
   (iv) adiabatic stress test for a representative crystallite under variation of the peak amplitude,
   (v) RWA / spectral-gap stress test (ensemble), and
   (vi) adiabatic stress test for a representative crystallite under variation of the chirp rate.