Nonreciprocal Gain in Non-Hermitian Time-Floquet Systems
Nonreciprocal Gain in Non-Hermitian Time-Floquet Systems
We explore the unconventional wave scattering properties of non-Hermitian systems in which amplification or damping are induced by time-periodic modulation. These non-Hermitian time-Floquet systems are capable of nonreciprocal operations in the frequency domain, which can be exploited to induce novel physical phenomena such as unidirectional wave amplification and perfect nonreciprocal …