Suwun Suwunnarat
Wesleyan University - ssuwunnarat@wesleyan.eduWe extend the concept of the coherent perfect absorption (CPA) in the non-linear domain. Our system consists of a microwave resonator inductively coupled to a diode with lossy non-linearity. We find out that such non-linear CPA demonstrates, under specific conditions, a broad-band absorption. The latter is associated with the formation of an exceptional point in the zeroes of the scattering matrix.
Related paper: https://arxiv.org/abs/2103.03668