Does it exist a schematic diagram of the quantum circuit implementing the symmetric UQCM N--> M for unknown states? If yes, does anyone know a Qiskit implementation of it?
I have just found a paper (https://www.semanticscholar.org/paper/Flocks-of-Quantum-Clones%3A-Multiple-Copying-of-Bu%C5%BEek-Hillery/6f63c331c22179feaeefdbe88a599d365094acc7) which answers to my problem.