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Updated: Jan 20, 2026
Electric Charge in a Magnetic Field
Published on: April 30, 2023
Strong Nonreciprocity in Modulated Resonator Chains through Synthetic Electric and Magnetic Fields
Christopher W Peterson1, Wladimir A Benalcazar2,3, Mao Lin2
1Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana 61801, Illinois, USA.
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 induce strong transmission nonreciprocity, i.e., complete isolation with only a weak perturbative modulation. This nonreciprocal effect is analogous to the Hall effect for charged particles. We experimentally implement chains of two and three spatiotemporally modulated resonators and measure over 58 dB of isolation contrast.
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