High-Density Wiring

Best-In-Class Signal Integrity

High-Density Wiring features best-in-class signal integrity, with high return loss, low ripples, and extremely low crosstalk between lines up to 18 GHz.

In addition to excellent high-frequency performance, Bluefors HDW semi-rigid coaxial cables are engineered to maintain consistent impedance and minimize insertion loss, even under demanding operating conditions.

The use of high-quality materials and precise manufacturing processes reduces signal degradation, making these cables ideal for applications where pristine signal fidelity is critical.

All cables have robust shielding to effectively protect against external electromagnetic interference, ensuring that sensitive measurements and transmissions remain unaffected by environmental noise.

Robust Reliability

Our High-Density Wiring platform is mechanically robust and extremely reliable—a result of our long experience in designing and building cryogenic wiring solutions.

We thoroughly test all our wiring at both room and millikelvin temperatures, so you don’t need spend valuable time validating your setup. Our rigorous testing guarantees the performance of HDW once the cryostat is cold. And we back up that guarantee with a standard 24-month warranty for each HDW tree.

With hundreds of HDW trees delivered to customers around the world, our wiring solutions provide proven performance for quantum research labs and advanced cryogenic setups.

For Large Scale Experiments

HDW is ideal for experiments requiring large numbers of high-frequency signals spanning from DC to 18 GHz.

Each side-loading port in the XLDsl and LD450sl side-loading systems can be equipped with up to 168 high-frequency lines—totalling up to 1008 lines in an XLDsl System, and 336 lines in an LD450sl System.

HDW has minimal thermal load, and the thermalization properties of our coaxial wiring have been thoroughly characterized (Simbierowicz et al., PRX Quantum 5, 030302 (2024)). The contribution of our cables and attenuators to the overall noise environment is not only minimized but also quantitatively understood and measured.

Easy Assembly and Maintenance

The High-Density Wiring form factor facilitates thermalizing and installing components into the system easily.  The modular design provides easy assembly and maintenance for large wiring infrastructures.

Assembly preparation can be performed on a workbench while the system is running, and quickly exchanged when the system reaches room temperature.

Watch the video below to see the straightforward installation of a HDW tree.

Flexible, Open, and Ready for Integration

HDW features open-standard SMPM connectors for broad compatibility with other measurement infrastructure products and gives flexibility in system design. The modular form factor enables easy integration of custom components with multiple high-density channels, such as filters and attenuators.

Bluefors works internally and together with the quantum hardware development community to advance cryogenic measurement infrastructure for large-scale wiring solutions utilizing our side-loading form factor.