Strong nonreciprocity in modulated resonator chains through synthetic electric and magnetic fields
arXiv:1903.07408 · doi:10.1103/PhysRevLett.123.063901
Abstract
We study nonreciprocity in spatiotemporally modulated 1D resonator chains from the perspective of equivalent 2D resonator arrays with a synthetic dimension and transverse synthetic electric and magnetic fields. The synthetic fields are respectively related to temporal and spatial modulation of the resonator chain, and we show that their combination can break transmission reciprocity without additional elements. This nonreciprocal effect is analogous to the Hall effect for charged particles. We experimentally implement chains of 2 and 3 spatiotemporally modulated resonators and measure over 58 dB of isolation contrast.
arXiv comment8 pages, 6 figures
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