Scalable Quantum Computer
Multicoax Cabling

From Qubit Control Hardware to Quantum Processor

Ardent Concepts offers solutions that support the unique challenges of Quantum Computing applications. Density, substantial environmental changes, and an increasing need for 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 patented technology Amphenol Ardent Concepts is known for, engineers will be able to drastically decrease the real estate required by individual connectors. This will increase their channel count and improve signal integrity in their systems

FEATURED RESOURCES

50Ω Hermetic Feedthrough

Amphenol Ardent Concepts TR Multicoax Series connectors mated with our 50Ω Hermetic Feedthrough are ideal for applications where hermeticity is crucial to the transmission of high speed signals. In these applications, TR 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 blind-holes from the inside of the vacuum. Lastly, the hermetic feedthrough is completely sealed using an epoxy potting.

Key Benefits

Leak-proof design (Max leak rate 2.00E-09 LTorr)
Variety of coaxial cable materials available for milliKelvin (mK) temperatures (Flexible, CuNi, NbTi)
Extremely dense form factor (160+ channels in standard ISO disc)
Easily mate/de-mate multiple high-speed lanes
Ardent TR Multicoax™ compatible – substantial channel increase over traditional surface mount connectors (2.54 mm pitch)
Can be prepopulated vacuum flanges, customer specific flanges, or sold individually
Tapped provisions allow quick connection of multiple TR multicoax connectors at once

Applications

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

Learn More

Electrical

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

Mechanical

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

Environmental

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

In-Line Cryogenic Attenuation

High density thermalized low noise cryogenic bulkhead attenuator array for use with TR Multicoax™ connectors. Utilizes industry leading materials like Oxygen-free high thermal conductivity (OFHC) copper and NiCr on thermally conductive crystalline quartz dielectric provides minimal change in attenuation with temperature delta. Attenuation is offered in 0, 10, and 20 dB configurations and supports bandwidth up to 12 GHz. 16 channel form factor at a 2.54 mm pitch, signal to signal, saves valuable real estate in confined spaces.

Learn More

Key Benefits

Small form factor for space constrained environments
Ideal for quantum computing applications
Multiple attenuation values available for experimentation
Substantial channel increase over traditional surface mount connectors
Minimal change in attenuation with temperature
Manufactured with approved cryogenic materials for thermalization, outgassing, and mechanical integrity (NiCr on thermally conductive crystalline quartz dialectric)

In-Line Cryogenic Attenuation Specifications and Measurement Results

Applications

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

Electrical

Frequency range: DC to 12 GHz
Attenuation @ 5 GHz: ±1 dB
Insertion loss variation with frequency: <1.0 dB
Return loss: - 10 dB MAX For 0 dB Attenuator
-15 dB MAX For 10/20 dB Attenuator
Max power handling: 100 mW

Mechanical

Mates with TR Multicoax connectors
Temperature rating: Validated to 3mK (sample in vacuum)

High Density TR Multicoax™ Cabling

High Density TR Multicoax™ Cabling

Amphenol Ardent Concepts’ high density (2.54 mm pitch) TR Multicoax™ bridges room temperature electronics to Hermetic Feedthrough for massive lane scale up. We offer multiple internal coaxial cabling options including: low outgassing flexible, CuNi semi-rigid, and non-magnetic. All metal, fully coaxial solderless compliant interface between connectors allows for noise floor crosstalk. Assemblies are available in a variety of form factors, cable lengths, and pre-bent configurations. Please consult the factory with any requirements.

Learn More

High Density TR Multicoax™ Cryogenic Cabling

Key Benefits

One of the densest solutions on the market, ability to fit 168+ channels through a single ISO 100 flange
Qualified Hermetic Feedthrough from room temp to vacuum
Industry-leading crosstalk at 2.54 mm pitch
Ability to utilize preferred cables within the industry: Flexible, CuNi, NbTi
Non-magnetic coaxial cabling available
Socket solutions for Quantum IC

Insertion Loss

-1 dB point at 27 GHz
-2.5 dB at 67.5 GHz
No resonances throughout the frequency range

Return Loss

-17 dB Max Return Loss occurs at 34 GHz
Return Loss better than-17dB out to 70 GHz
Best fit line of Return Loss idealized as close to linear, no drastic changes in Return Loss observe

Applications

Dilution refrigerators/Cryogenic devices
Shielding cans
Sample exchangers
Between isolation discs
From distribution refrigerators to measurement equipment

Advanced Near-Processor Solutions

Customizable TR Multicoax™ assemblies for connection of final stage to processor
Light blocking connection between stages
Right angle low-profile form factors for near processor connection
Alternative coaxial connector options available (SMA, SMP)
All metal sockets and interposers available for chip-to-board and board-to-board connections
Coaxial down to 1 mm pitch
Non-coaxial down to 0.4 mm pitch
Non-magnetic materials available

Learn More