Modifies a symmetric relaxation superoperator to relax the system towards a user-specified state using the Levante-Ernst method ( https://doi.org/10.1016/0009-2614(95)00578-R ) which works by adding one-way cross-relaxation with the unit state.
R - a relaxation superoperator that drives the system to the zero state rho - desired relaxation destination
R - the relaxation superoperator that drives the system to the state requested
Liouville space spherical tensor formalism only.
Version 2.2, authors: Ilya Kuprov