Nonreciprocal and chiral single-photon scattering for giant atoms

Abstract

Giant atoms coupled to their environment at multiple locations, give rise to unconventional physics not seen with standard atomic systems. In this work, the authors explore the nonreciprocity of giant atoms and propose a scheme of a three-level giant atom coupled to waveguides providing nonreciprocal and chiral scattering which could be used to build efficient single-photon targeted routers and circulators.