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Superconducting Qubits

A Traveling-Wave Parametric Amplifier With Integrated Diplexers

arXiv
Authors: C. Denney, K. Genter, K. Cicak, J. D. Teufel, J. Aumentado, F. Lecocq, M. Malnou

Year

2026

Paper ID

30945

Status

Preprint

Abstract Read

~2 min

Abstract Words

85

Citations

N/A

Abstract

Traveling-Wave Parametric Amplifiers (TWPAs) are ubiquitous in superconducting circuit readout, providing high gain with near-quantum-limited noise performance across a wide bandwidth. Their operation, however, relies on a strong microwave pump tone that is typically delivered using off-chip passive components, such as directional couplers or diplexers. These external elements add loss, increase system complexity, and limit scalability. Here, we present a traveling-wave parametric amplifier that incorporates on-chip input and output diplexers for pump routing. This co-fabricated architecture offers a compact and scalable solution for superconducting-circuit readout.

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  • Traveling-Wave Parametric Amplifiers (TWPAs) are ubiquitous in superconducting circuit readout, providing high gain with near-quantum-limited noise performance across a wide...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2603.12327 [2] arXiv https://arxiv.org/abs/2603.12327 [3] Publisher https://arxiv.org/abs/2603.12327

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