The data files contain the data on the evolution under the XY Hamiltonian presented in Fig. 1.

The files contain the following data:

B.mat
	Bfield (ion) : transverse magnetic field B for each ion in eq. (1) in rad/s
Jij.mat
	Jij (ion, ion) : spin-spin coupling matrix J_ij in eq. (1) in rad/s
DataNeel.mat
	data (ion, time) : excitation of each ion and time step
	x (time) : Evolution time under the XY Hamiltonian in microseconds
rho_3ms
	rho2 (pair, 2-qubit basis, 2-qubit basis) : density matrices for 2-qubit subsystems reconstructed by maximum-likelihood estimation after 3 ms evolution time
	rho2 (pair, 3-qubit basis, 3-qubit basis) : density matrices for 3-qubit subsystems reconstructed by maximum-likelihood estimation after 3 ms evolution time