Order your Cri/oFlex 2 from the new webshop!

To make your cryogenic cable dreams come true even faster, we now have cables on stock in our brand new webshop! Lead time is reduced for selected products. Order today, and have it shipped tomorrow!

Flexible Cryogenic I/O

Low thermal conductance and scalable cryogenic multi-channel i/o solution using (super)conducting circuits on flexible substrates.

We are dedicated to supply the best hardware for quantum engineers and the industry.

Together with our customers we make quantum technologies a reality.

Delft circuits, hardware for quantum engineers.

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Quantum Computing

Quantum computing architecture creates stringent requirements on i/o for qubit control. The cryogenic cable Cri/oFlex® 2 and Cri/oFlex® 3 series are designed specifically for crowded setups and provide excellent microwave performance.

Quantum Internet

Quantum internet research is developing rapidly and requires  a growing number of SNSPD i/o channels. Our multi-channel flexible cryogenic cable is dedicated for quantum communication applications.


Scanning probes and moving stage experiments at low temperatures have been waiting for ultra-thin cables with excellent RF and cryogenic properties. Check out our flexible cryogenic cable Cri/oFlex® 1 series with an unprecedented footprint.


Cri/oFlex® 1

Ultimate cryogenic flexibility​

Ultra-flexible microwave i/o for scanning probe microscopes and other vibration sensitive instruments. The thinnest and the most flexible cryogenic RF cable allows you to transmit your signal while offering extreme vibrational decoupling.

Cri/oFlex® 2

The new cryogenic microwave standard

Single channel microwave i/o for densely-packed sample spaces in the refrigerators. Simple installation, small form-factor and reduced thermal loads, allow an increased number of microwave lines in cryostats. This flexible cryogenic cable is a new standard.

Cri/oFlex® 3

Massively scalable cryogenic i/o

Massively scalable multi-channel flexible RF cable for refrigerators, optimized for quantum computing applications with built-in on-flex filtering for signal conditioning.


Case study highlights

Scaling Up SNSPD Readout

The primary goal was reading out a 16 SNSPD setup in a compact fridge using multi-channel i/o. This is the first stepping stone to scaling up to and beyond a 64 SNSPD setup. The system required going in a straight shot from room temperature, through the vacuum barrier, down to 3K at the chip holder where the dectector is located…

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Download Cri/oFlex® 2 Datasheet