Arbitrarily high time bandwidth performance in a nonreciprocal optical resonator with broken time invariance.

ABSTRACT: Most present-day resonant systems, throughout physics and engineering, are characterized by a strict time-reversal symmetry between the rates of energy coupled in and out of the system, which leads to a trade-off between how long a wave can be stored in the system and the system's bandwidth. Any attempt to reduce the losses of the resonant system, and hence store a (mechanical, acoustic, electronic, optical, or of any other nature) wave for more time, will inevitably also reduce the bandwidth of the system. Until recently, this time-bandwidth limit has been considered fundamental, arising from basic Fourier reciprocity. In this work, using a simple macroscopic, fiber-optic resonator where the nonreciprocity is induced by breaking its time-invariance, we report, in full agreement with accom

SUBMITTER: Cardea I 

PROVIDER: S-EPMC7519663 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature