| Using an energy-independent non-Hermitian Hamiltonian approach to open systems, we fully describe transport through a sequence of potential barriers as external barriers are varied. Analyzing the complex eigenvalues of the non-Hermitian Hamiltonian model, a transition to a superradiant regime is shown to occur. Transport properties undergo a strong change at the superradiance transition, specifically a drastic change in the structure of resonances is demonstrated. This opens exciting research perspectives. Coherent quantum regime is very important in nanoscale applications and it has important consequences in basic energy problems: evidence of coherent energy transfer has been recently found in photosynthetic light-harvesting systems. |
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