Data for van Lomwel et al., Fast thermal state preparation beyond native interactions.

The data used in this paper is available without restriction. The data provided are solutions to an optimal control problem outlined in the paper, and typically given as two arrays: h_opt, c_opt. It also includes the duration of the evolution, T, and the number of time-slices. Target points are specified by 6 digits codes: XXXYYY, where d1 = X.XX and d2 = Y.YY. The coefficients of the target Hamiltonian are then given by \lambda_1 = 1-d1-d2, \lambda_2 = d1, and \lambda_3 = d2. Within h_opt, there are n+2 sub-arrays, where n is the system size. Each sub-array represents the control sequence for each of the tunable controls in the system Hamiltonian. The specific basis ordering for the system Hamiltonian is: H(t)=\sum_{j=1}^nh_j(t)Z_j + h_{n+1}(t)X_1+h_{n+2}X_n + (time-independent part), i.e., with zero-counting, h_opt[0] displays the control sequence for Z_1 and h_opt[n-1] displays the control sequence for X_n. Within each sub-array, each element represents the constant amplitude h_{j,m} at the time-slice m. The solution c_opt is an array of elements c_1,c_2,\dots,c_{n+1}, in order to construct the initial condition, K_0=\sum_{j=1}^nc_j Z_j+c_{n+1}\prod_{j=1}^nZ_j. For other data enquiries, email the contact author.