I was wondering if there is a codebase online or if somebody here has implemented successfully the non-variational formulation of the imaginary-time evolution algorithm in qiskit. I know qiskit_algorithms have the variational formulation as VarQITE. But I am looking for the non-variational approach wherein each Trotter step of QITE is replaced by an evolution over a unitary operator as described in
https://journals.aps.org/prxquantum/pdf/10.1103/PRXQuantum.3.010320
