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arXiv · 1811.06036

Realization of directional amplification in a microwave optomechanical device

L. Mercier de Lépinay·E. Damskägg·C. F. Ockeloen-Korppi·M. A. Sillanpää
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Abstract

Directional transmission or amplification of microwave signals is indispensable in various applications involving sensitive measurements. In this work we show in experiment how to use a generic cavity optomechanical setup to non-reciprocally amplify microwave signals above 3 GHz in one direction by 9 decibels, and simultaneously attenuate the transmission in the opposite direction by 21 decibels. We use a device including two on-chip superconducting resonators and two metallic drumhead mechanical oscillators. Application of four microwave pump tone frequencies allows for designing constructive or destructive interference for a signal tone depending on the propagation direction. The device can also be configured as an isolator with a lossless nonreciprocal transmission and 18 dB of isolation.

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L. Mercier de Lépinay, E. Damskägg, C. F. Ockeloen-Korppi, M. A. Sillanpää. 2018-11-14. Realization of directional amplification in a microwave optomechanical device. https://doi.org/10.1103/physrevapplied.11.034027

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