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Quantum Technologies
for Advanced
Readout

Silent Waves is pioneering compact, cryogenic microwave solutions designed to shrink the footprint of readout lines, unlocking the path to truly large-scale superconducting quantum computers.
The Argo
The Argo

The Argo is our first traveling wave parametric amplifier. Besides its high bandwidth and low added noise, the Argo is easy to install and immune to flux-noise, making it suitable for use in applications involving magnetic fields. In order to reach high gain over such a large bandwidth, we introduce a photonic gap in the dispersion relation. This translates in a gap of about 0.4 GHz in the gain figure. We can customize this gap to optimize the amplifier for your desired frequencies. The Argo does not require a DC current source and is powered by a microwave source, offering convenience and versatility.

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The Cathargo
The Cathargo

The Carthago is our latest generation of traveling wave parametric amplifier. Based on Kerr-reversal effet, it exhibits continuous high gain over a very high bandwidth, with very low noise and high saturation power. Its tunability makes it an ideal solution for setups that require flexibility. The band of high amplification can thus be centered over a wide range. The superconducting magnetic coil needed to ensure optimal performances of the device is included with the device and directly embedded with in the sample holder.

 
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The Dreadnought
The Dreadnought

The ultimate plug & play solution for high-fidelity, single shot qubit readout. Combining all the cryogenic electronics needed before the TWPA, the Dreadnought is Silent Waves’ latest product.

  • Available with our two TWPA models (Argo & Carthago)
  • Easy to stack
  • Magnetically shielded TWPA
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Ultra-low noise, quantum-level precision

At the heart of every Silent Waves amplifier is a decade of research in superconducting quantum electronics. Our Josephson Traveling-Wave Parametric Amplifiers achieve near-quantum-limited noise performance across multi-GHz bandwidths, preserving fragile quantum states with unrivalled signal integrity. Whether for qubit readout, axion detection, or radio astronomy, Silent Waves sets the benchmark for precision at the quantum limit.

More Qubits Less footprint

Silent Waves amplifiers deliver unmatched signal-to-noise performance in an ultra-compact form factor. Our traveling-wave designs eliminate the bulk and complexity of conventional multi-stage chains—enabling denser qubit arrays, simplified cryogenic wiring, and higher system yield per cubic inch.

Trusted by Leading Quantum Manufacturers

Silent Waves technology powers the readout systems of Tier-1 quantum computing teams worldwide. From superconducting to hybrid architectures, our amplifiers are validated in production environments where reliability, reproducibility, and data fidelity are non-negotiable.

From order to experiment, fast

Every amplifier ships fully characterized and ready for immediate integration. With streamlined logistics, rapid lead times, and on-call engineering support, Silent Waves helps you accelerate from prototype to experiment without delay.

Expert support, guaranteed performance

Our team combines deep cryogenic and microwave engineering expertise with hands-on experience across multiple quantum modalities. Each amplifier includes performance verification and direct access to Silent Waves engineers through installation, calibration, and scaling.

Built for Scale

Engineered for volume deployment and long-term stability, Silent Waves amplifiers are designed for the next generation of large-scale quantum processors. Consistent performance, proven manufacturability, and a clear roadmap toward fully integrated readout modules ensure readiness for industrial quantum production.

Who are Silent Waves

Founded in Grenoble by Luca Planat, Nicolas Roch and Baptiste Planat, Silent Waves combines world-leading expertise in superconductivity, quantum electronics, and nanofabrication with a dynamic startup drive.

We are embedded in a globally recognized innovation ecosystem where science meets commercialization.

QC

Near-Quantum-Limit Performance

Our Josephson junction-based traveling-wave parametric amplifiers deliver high gain, broad bandwidth, and high saturation power—ideal for multiplexed solid-state qubit readout.

From Fabrication to Fidelity

We own the full production line. Our patented process ensures reproducibility, high yield, and short lead times. Each amplifier is rigorously characterized, shipped with a full datasheet, and backed by a 1-year warranty.

 

Cryogenic Integration Made Simple

Quantum experiments are complex enough. That’s why we provide hands-on support for installation and setup—reducing risk and accelerating time-to-science.

 

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