Breaking Lorentz reciprocity with frequency conversion and delay

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.

5 page main text, 5 page supplement

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Cited by in corpus (19)

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• Realizing a Circuit Analog of an Optomechanical System with Longitudinally Coupled Superconducting Resonators
• Hardware-Encoding Grid States in a Non-Reciprocal Superconducting Circuit
• Advances in Bosonic Quantum Error Correction with Gottesman-Kitaev-Preskill Codes: Theory, Engineering and Applications
• Passive superconducting circulator on a chip
• Efficient and Low-Backaction Quantum Measurement Using a Chip-Scale Detector
• Consistent Quantization of Nearly Singular Superconducting Circuits
• Design of an on-chip superconducting microwave circulator with octave bandwidth
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• Nondegenerate Josephson Mixers with Enhanced Bandwidth and Saturation Power for Quantum Signal Amplification and Transduction