  Recent theoretical and experimental efforts have shown the remarkable and
counter-intuitive role of noise in enhancing the transport efficiency of
complex systems. Here, we realize simple, scalable, and controllable optical
fiber cavity networks that allow us to analyze the performance of transport
networks for different conditions of interference, dephasing and disorder. In
particular, we experimentally demonstrate that the transport efficiency reaches
a maximum when varying the external dephasing noise, i.e. a bell-like shape
behavior that had been predicted only theoretically. These optical platforms
are very promising simulators of quantum transport phenomena, and could be
used, in particular, to design and test optimal topologies of artificial
light-harvesting structures for future solar energy technologies.
