QuantWare’s Contralto-A Quantum Processor Wins Quantum Effects Award 2025 for Leading Quantum Error Correction  

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Insider Brief

  • QuantWare won the Quantum Computing Hardware category of the Quantum Effects Award 2025 for its Contralto-A processor, recognized as the largest commercially available quantum processing unit designed for quantum error correction.
  • Contralto-A features 17 qubits—more than double competing systems—and includes flux-tunable couplers and individual Purcell filters to support high-fidelity operations and advanced error-correction protocols such as the Distance-3 surface code.
  • The award highlights QuantWare’s leadership in developing scalable, fault-tolerant quantum hardware, with Contralto-A currently in Early Access ahead of a full commercial launch in the first half of 2026.
  • Image: QuantWare VP of Business Development, Tom Wilson (right) accepts the 2025 Quantum Effects Award for “Best Quantum Hardware”.

PRESS RELEASE —  QuantWare, the world’s highest-volume supplier of commercial quantum processing units (QPUs), has won the Quantum Computing Hardware category of the Quantum Effects Award 2025 for Contralto-A, the largest commercially available processor designed for quantum error correction. The award was received yesterday at the Quantum Effects conference in Stuttgart and recognizes QuantWare’s global leadership in advancing quantum hardware and driving the availability of application-ready quantum processors. This news follows the announcement that QuantWare’s 64-qubit QPU, Tenor, is powering Italy’s largest Quantum Computer.  

Mastering quantum error correction (QEC) is the key to unlocking fault-tolerant quantum systems that massively expand the application space of quantum computers. Contralto-A features 17 qubits, more than twice the size of competing solutions. This industry-leading qubit count makes the development of advanced QEC capabilities accessible to research teams and computer scientists worldwide, accelerating the industry’s progress toward utility-scale quantum computing.  

The processor also impressed the esteemed Quantum Effects Jury with its state-of-the-art components, including flux-tunable couplers and individual Purcell filters. The QEC-optimized layout, designed together with leading quantum error correction experts, provides the high-fidelity operations required for demonstrating advanced error-correction protocols including a Distance-3 surface code.  

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The Jury stated: “QuantWare impressed with their Contralto-A – the largest commercially available QPU specifically designed for quantum error correction. With its architecture, the system enables practical surface code implementations and forms an important building block for fault-tolerant quantum computers.”  

Contralto-A’s success at the Quantum Effects Award underscores the importance of this work, powerfully laying the groundwork for the scalable, fault-tolerant systems of tomorrow capable of solving humanity’s most pressing challenges.  

“Contralto-A represents a critical step forward in making practical quantum error correction a reality,” said Matthijs Rijlaarsdam, CEO of QuantWare. “We give the industry the reliable, high-performance, open-architecture processor it needs, to accelerate the shift from proof-of-concept experiments to true application-ready quantum systems. We’re proud to see the impact of this work recognized with the Quantum Effects Award.”  

Contralto-A is currently in Early Access with a select number of customers, ahead of its General Access launch planned for the first half of 2026. To learn more or inquire about a pre-order, contact the QuantWare commercial team directly at [email protected] or visit the Contralto-A product page.  

Matt Swayne

With a several-decades long background in journalism and communications, Matt Swayne has worked as a science communicator for an R1 university for more than 12 years, specializing in translating high tech and deep tech for the general audience. He has served as a writer, editor and analyst at The Quantum Insider since its inception. In addition to his service as a science communicator, Matt also develops courses to improve the media and communications skills of scientists and has taught courses. [email protected]

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