TR Multicoax Series | Quantum Computing

The newest form factors of Ardent’s TR Multicoax connectors support the many unique challenges of Quantum Computing applications. Density, substantial environmental changes, and an increasing needfor more high-speed lanes are causing quantum computer designers to rethink traditional routing methods of individual cables. By utilizing superconducting materials like CuNi cables and the existing patented contact technology Ardent is known for, engineers will be able to

drastically decrease real estate required by individual connectors and increase their channel count while improving signal integrity in their systems.

TR for Quantum/Supercomputing Applications is ideal for use in Dilution refrigerators, Cryogenic devices, Vacuum chambers, Anywhere RF signals need to be passed through a sealed wall


50 Ω Hermetic Feedthrough
Inner-Fridge Wiring
Thermal Anchoring

Leak-proof Feedthrough design.
Extremely dense form factor.
Easily mate/de-mate multiple high-speed lanes.

Variety of coaxial cable materials available. 16, 24 Channel options.
Custom lengths.

Can be customized for thermal anchoring to minimize the heat load in a cryostat.

Custom attenuationnblocks can mate directly to TR assemblies.
Reliable interface eliminates fragile push on connector style attenuation.


50Ω Hermetic Feedthrough is ideal for applications where hermeticity is crucial to the transmission of high speed signals. In these applications, TR Multicoax connectors are mated to the hermetic feedthrough on either end ensuring an impedance matched 50Ω channel between any two chambers. The feedthrough is fixed to a flange (such as an ISO disk) with screws in blindholes from the inside of the vacuum. The hermetic feedthrough is completely sealed using an epoxy potting.




50Ω impedance
2.54mm/4.00mm pitch signal to signal


Individually packaged in anti-static bag


Victrex Peek 450G
303 Stainless Steel with gold over nickel plate
BeCu Alloy 172



Performance out to 40 GHz
Return Loss: ≤ -10 dB to 30 GHz, ≤ -5 dB to 40 GHz
Insertion Loss: ≤ -0.9 dB to 30 GHz, ≤ -2.7 dB to 40 GHz



4 mounting holes in ISO disk or bulkhead required for feedthrough mounting. Feedthrough provides mounting and tooling for TR connector to attach to the feedthrough.


16 and 24 channel versions
Potted and O-Ring versions
Mechanical Cycles: 1000



Max leak rate 2.00E-09 Ltorr
Rated down to 10mK temperatures



Dilution refrigerators/Cryogenic devices
Quantum Computing
Vacuum Chambers
Anywhere where RF signals need to be passed through a sealed wall


Article with questions and answers

Development of a deterministic multi-channel system to generate precision signals Around the world, researchers in the field of data processing with quantum computers are scaling up from proof-of-concept designs based on single qubits to complex multi-qubit designs to validate the theory of operation. With IBM's new 50-Qubit system, researchers are on their way to an actual usable quantum computer. However, data processing with quantum computers still faces challenges. Current quantum systems are incredibly complex and difficult to operate. Each qubit requires multiple precisely tuned and sequenced pulsed RF control signals. In general, an AWG is not necessarily needed to generate these signals. However, researchers need a scalable method to create deterministic multi-channel systems to generate precision signals.


Q: "Regarding to the article, to what extent do I need the SMP-mini in the current technology? Does 1 line with an SMP-mini (or comparable) mean the control of 1 Qubit? Is there a supply line or several here to work with one Qubit? What signal is actually transmitted there?"

A: "As far as I know, several lines are needed. One for driving and one for reading.
In addition, there are further qubits for error correction. The goal is a logical qubit gate that can be used for further work.
The goal is a logical qubit gate that can be used for further work. Is there a supply line or several here to work with one Qubit?
The SMP-mini is used by many because it achieves the bandwidth (below 10 GHz), is small and is a snap-in."


Q: "So, this means that if the user uses an signal generator and wants to address 100 Qubits, then he needs at least 100 coaxial lines for the pulsed RF control signals?"

A: "This means that a total of 200 coaxial lines are needed.  100 coaxial lines for the control and 100 for reading out."


Hermetic Feedthrough Data

Multicoax Connector Data