Extreme Nonreciprocal Near-Field Thermal Radiation via Floquet Photonics

FERNÁNDEZ-ALCÁZAR, LUCAS J.; KONONCHUK, RODION; LI, HUANAN; KOTTOS, TSAMPIKOS

PHYSICAL REVIEW LETTERS

AMER PHYSICAL SOC

Año: 2021 vol. 126

0031-9007

By using Floquet driving protocols and interlacing them with a judicious reservoir emission engineering, we achieve extreme nonreciprocal thermal radiation. We show that the latter is rooted in an interplay between a direct radiation process occurring due to temperature bias between two thermal baths and the modulation process that is responsible for pumped radiation heat. Our theoretical results are confirmed via time-domain simulations with photonic and rf circuits.