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arXiv · 1705.09548

Breaking Lorentz reciprocity with frequency conversion and delay

Eric I. Rosenthal·Benjamin J. Chapman·Andrew P. Higginbotham·Joseph Kerckhoff·K. W. Lehnert
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Abstract

We introduce a method for breaking Lorentz reciprocity based upon the non-commutation of frequency conversion and delay. The method requires no magnetic materials or resonant physics, allowing for the design of scalable and broadband non-reciprocal circuits. With this approach, two types of gyrators --- universal building blocks for linear, non-reciprocal circuits --- are constructed. Using one of these gyrators, we create a circulator with > 15 dB of isolation across the 5 -- 9 GHz band. Our designs may be readily extended to any platform with suitable frequency conversion elements, including semiconducting devices for telecommunication or an on-chip superconducting implementation for quantum information processing.

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Eric I. Rosenthal, Benjamin J. Chapman, Andrew P. Higginbotham, Joseph Kerckhoff, K. W. Lehnert. 2017-11-06. Breaking Lorentz reciprocity with frequency conversion and delay. https://doi.org/10.1103/physrevlett.119.147703

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