We discuss the possibility of controlling energy storage, wireless power transfer, reflection and transmission using coherent excitation of complex eigenstates in metastructures, opening new venues in the quest to control and manipulate light in integrated structures. In particular, we show that it is possible to engage complex zeros of a lossless cavity to mimic absorption and induce storage and release of energy, and efficient power transfer. We also connect these concepts with embedded eigenstates and few-photon optoelectronic devices. Our results open new opportunities for optoelectronic memories and switches operating at very low energy.
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