Gothenburg, Sweden, and Delft, The Netherlands – October 2024 – Qblox, a leading provider of scalable and modular quantum control stacks, is proud to announce its strengthened partnership with Chalmers University of Technology’s Wallenberg Centre for Quantum Technology (WACQT). Chalmers University has chosen Qblox as its go-to provider for control electronics since 2022, with the relationship now elevated as Chalmers becomes an excellence center of Qblox. This collaboration is a vital step toward building a functional 100-qubit quantum processor.

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A two-year journey towards quantum excellence

Chalmers University’s WACQT has been a pioneer in advancing quantum technology. As part of their commitment to quantum research, they have worked closely with Qblox, aligning their roadmaps to achieve scalable quantum architectures. The long-term partnership supports WACQT’s ambitious goal of developing a 100-qubit system capable of tackling complex optimization tasks to revolutionize industries.

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" Qblox has been a vital partner in our mission to build a 100-qubit quantum computer for Swedish industry. Their robust and highly scalable control system, with its outstanding analog performance, enables us to push quantum boundaries without hardware limitations. This collaboration has been essential in aligning our roadmaps to advance quantum computing and deliver cutting-edge solutions. " 

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Leveraging Qblox’s modular control stack

Chalmers University has successfully deployed Qblox’s multi-chassis Cluster technology, benefiting from the modularity and scalability of the system. The versatility of the deployed modules allowed Chalmers to achieve fast and accurate control of their fixed-frequency transmons with tunable couplers, resulting in high-fidelity quantum gate operations and readout.

The team at WACQT actively utilizes the Quantify software platform, building their own compiler and custom software layers on top to advance their research. This flexibility and collaboration are central to both organizations’ goals of scaling to 100 qubits, ensuring that the system is optimized for error correction and other critical quantum computing tasks.

We value the long, trustful relationship with Chalmers. Back in 2021, Chalmers was one of the first institutions to believe in our vision for scaling up quantum control. It is fantastic to see the team thrive and be part of our excellence center community. We hope to enable them on their journey towards large-scale quantum computing.

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Breakthrough innovations in quantum error-correction (QEC)

As highlighted in a recent paper published by Chalmers University, researchers developed a groundbreaking passive reset and leakage reduction scheme using Qblox’s Cluster. This scheme, critical for quantum error correction, achieves remarkable fidelities above 99% and can reset qubits in as little as 83 ns.

In this paper, the team demonstrates how using tunable couplers allows for the rapid transfer of unwanted qubit excitations into the readout resonator. This achievement reduces the QEC cycle runtime and enhances the overall algorithmic fidelity, marking a significant milestone toward fault-tolerant quantum computing.

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For more details, you can access the full paper here: https://arxiv.org/abs/2409.16748. 

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Contact InformationEva Flipse
Head of Marketing – Qblox
eflipse@qblox.com

Contact Information – WACQT
Giovanna Tancredi

Senior Researcher

tancredi@chalmers.se

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