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Benchmarked to be equivalent or better than standard coaxial solutions
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Microwave transmission cut off at 8 GHz
Less than 6 nW / channel at 20mK passive heat load
Inline attenuation of 50 dB optimised for noise suppression
General Specifications
Specification
Required Length For 180° Longitudinal Rotation
10 mm
Operating Temperature
0 K to 400 K (gradient)
Applications
Qubit flux for superconducting qubits or similar
Number Of Channels
8
Storage Temperature
0 K to 320 K
Transmission Type
Stripline
Connector Type
SMA female / SMP
Primary Flex Materials
Polyimide, Silver
Minimum Bending Radius
5 mm
Vacuum Feedthrough Connection
KF25/40, ISO 100 side and top loader ports
Vacuum Feedthrough Leak Rate
< 10-9 mbar L/s
Cable Overview
Want To Know More
Used For
✤ Excitation between qubit states
✤ Measure qubit state
✤ Apply general microwave signals
Optimised For
✤ Signal power and integrity
✤ Noise temperature
✤ Minimising active & passive thermal load
Key Features
✤ 8 Channels per flex
✤ 8 GHz low-pass filter
✤ 50 dB distributed attenuation
✤ Infrared filter
Robust Microwave Interface
Precision SMA/SMP connections provide repeatable, low-loss interfacing between the control stack at room temperature and the device environment at the mK stage.
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Fridge-Compatible Feedthroughs
Multi-flex vacuum feedthroughs are designed for practical lab use, enabling clean routing and fast deployment across a wide range of dilution refrigerator configurations.
About the Microwave Drive Lines
Microwave Drive Lines for Clean Cryogenic Signal Delivery
Our microwave drive lines are built to carry stable RF signals from room-temperature electronics down to the mK stage with minimal loss and distortion. Multi-line vacuum feedthroughs route multiple flexes through the vacuum boundary and stay compatible with common dilution refrigerator platforms. The attenuation and filtering chain is staged across temperature plates to suppress thermal noise and unwanted high-frequency radiation.
Integrated Attenuation and Filtering
Stage-by-stage attenuation and low-pass and infrared filtering reduce electron noise and high-frequency radiation while preserving clean.
>50dB
Total Attenuation
8GHz
IR
Low-Pass Filtering
Radiation Suppression
What We Do
Precision Microwave Drive Lines for Qubit Control
We design and assemble microwave delivery chains that link room-temperature instruments to the mK stage, reducing thermal noise and stray radiation while maintaining stable amplitude.
Microwave Response
A microwave drive line is optimised for low loise microwave transmission up to 8 GHz. In this way one can apply microwave drive signals to your qubit or cryogenic circuit, without opening noise channels.
With 50 dB attenuation distributed over different temperature stages one obtains the optimal balance between active heat load, and opening loss channels through loss channels.
With a low-pass filter at 8 GHz and a an IR-filter on flex your circuits are maximally protected for high-frequency interference.
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Cross Talk
Cross talk is what we experience daily. Whether it is picking up unwanted conversations in the train, or a phone connection suffering from interference.
Cri/oFlex® has been designed such that each qubit is addressed individually.
System integration
Integration
There is a wide variety of cooling solutions for quantum computing and low temperature experiments, ranging from lab size dilution refrigerators to small 4K table-top systems. As an i/o provider, it is our task to connect quantum devices and cold experiments to the control electronics regardless of the cooling implementation. To that end we have developed standardized solutions that fit (or can be made to fit) all fridges.
Whether you are purchasing a new system or want to refurbish your current system, Cri/oFlex® provides a solution.
Wiring Ports
Have a spare port in your fridge and want to add extra lines or replace an existing wiring port with a higher density cabling solution?We supply vacuum feedthroughs, Thermal clamps, Brackets and Cri/oFlex® laminates for all standard ports you will find in dilution refridgerators.
Out of the box solution
Fits for all standard ports
Upgrade existing systems
Loaders
Delft Circuits can supply fully pre-assembled loaders with Cri/oFlex cabling inside.We supply top- and sideloaders for all common brands such as Bluefors, Oxford and Leiden Cryogenics.
The advantages of pre-assambled loaders:
Plug and play cabling solution
More channels in a loader
Engineered for your application
Turn-Key
Have a spare port in your fridge and want to add extra lines or replace an existing wiring port with a higher density cabling solution?We supply vacuum feedthroughs, Thermal clamps, Brackets and Cri/oFlex® laminates for all standard ports you will find in dilution refridgerators.
Full-service provider
Full fletched solutions
Innovative design
Dive Deeper Into Cri/oFlex Technology
Nano Vacuum delivers world-leading vacuum, micro and nano-fabrication, and quantum-cryogenic solutions for researchers and innovators across Australia and New Zealand.
Copyright © NanoVacuum 2025. All rights reserved.
Phone
1800 560 820
Location
6 / 7 Salisbury Road, Castle Hill, NSW. 2154
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