Peripherals
Build your readout chain with our peripheral components
Optimizing your quantum system starts with the components that surround your processor. QuantWare's Crescendo is the industry standard travelling wave parametric amplifier (TWPA), providing market-leading performance, making it the TWPA of choice for customers worldwide.
Brass rectangular valve with two hexagonal connectors and embossed logo on the front.

Achieving best-in-industry gain and noise performance over the readout bandwidth, the Crescendo travelling wave parametric amplifier (TWPA) enables the multiplexed readout of many qubits at once. This enormous reduction in the required overhead in terms of wiring complexity, up-chain components and cost per qubit compared to traditional narrow-band JPA-based readout solutions facilitates future-proof scalable qubit readout.

Crescendo enterprise offering for hyperscalers

The market-leading performance of Crescendo is available in the volumes demanded by today’s hyperscalers through our enterprise offering.


Engineered for large-scale quantum infrastructure, our enterprise offering delivers the same market-leading performance in high volumes with flexible delivery schedules and customisable cryogenic pre-characterisation. By removing component availability as a scaling constraint, it enables hyperscalers to expand their quantum computing clusters rapidly, reliably, and with full confidence in system uniformity.

Get in touch about our enterprise offering
Trusted by
"QuantWare’s near quantum-limited Crescendo-S TWPA enabled us to detect the states over a range of mode frequencies which we had been unable to detect in the past. The extremely low noise characteristics over a wide band of the Crescendo was an essential component for our successful results."
Christopher Wilson
Professor, University of Waterloo
Frequently asked questions
What are the key performance specifications for the Crescendo cryogenic amplifier that enhance qubit readout fidelity?

The Crescendo is a Travelling Wave Parametric Amplifier (TWPA) designed for superior qubit readout. It offers the highest signal-to-noise ratio improvement (SNRi) on the market (up to 13 dB), directly translating to higher single-shot readout fidelity for your quantum system.

Can QuantWare supply the Crescendo for large-scale commercial quantum computer manufacturing?

Yes. QuantWare is the largest global provider of commercial TWPAs. Our manufacturing capabilities are scaled to meet the demand of very large orders, offering industry-leading, unmatched lead times and competitive pricing for bulk quantities (enterprise offering).

How is the pricing structured for the Crescendo cryogenic amplifiers?

Pricing depends on the specific amplifier model and the quantity ordered, as we highly value bulk and standing orders for system builders. For a precise quote, please contact us.

What technical support is provided for integrating the peripheral devices into a quantum system?

We provide expert support and documentation on installation and optimal use of the peripheral devices. Each customer account is followed internally by a Customer Success Engineer and an Application Scientist to ensure smooth integration into your existing readout line.