Delft Circuits has introduced a turnkey High-Density Input/Output (HD I/O) system designed to overcome one of the key bottlenecks in utility-scale quantum computing: cryogenic wiring scalability. Traditional coaxial cabling requires a linear increase in cryostat wiring as qubit counts grow, leading to thermal, spatial, and integration limitations. Delft’s new system delivers 256 control channels per module—a significant increase over the 168-channel limit of high-density coax alternatives—without requiring larger refrigeration infrastructure. Its modular loader architecture enables 32-channel increments, allowing researchers to scale I/O capacity in step with qubit demands while minimizing cost, space, and complexity.
The HD I/O system is compatible with all Cri/oFlex™ products, known for their flexible stripline designs and embedded signal conditioning. Unlike conventional coax setups that require per-stage filtering at every cryostat level, Cri/oFlex integrates these filters directly into the cable, eliminating multiple points of failure and simplifying cryogenic integration. This approach increases reliability, reduces thermal load, and enables compact routing of high-density control lines across multiple qubit modalities, including superconducting, spin, and photonic platforms. Each module supports up to 64 qubits, enabling dense control of large-scale QPUs while reducing hardware integration time.
By delivering a complete, ready-to-deploy I/O platform, Delft Circuits shifts the focus for quantum teams from infrastructure engineering to QPU and algorithm development. The HD I/O system is available now and has been adopted by industry and academic partners to support testing and deployment of utility-scale quantum devices.
For more information, visit the official announcement here.
March 21, 2025
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