Cryo Flux BiasT Array

Cryo Flux BiasT Gold-plated OFHC copper casing.

Cryo Flux BiasT Array

Precision Flux-Biasing for Scale

YQ-CBT12-1G | DC – 1GHz, 50Ω

In stock – Contact us to order

A high-density solution featuring 12 cryogenic BiasT circuits. Engineered for minimal heat load and exceptional linearity, this array provides the clean, first-order transfer functions required to maintain high-fidelity control in large-scale superconducting architectures.

Key performance metrics are:

Main application: Flux-biasing of superconducting qubits
Array of 12 cryogenic BiasT circuits
Highly linear and first-order transfer function
10 kHz to 1 GHz frequency range for RF
Optimized for low thermal dissipation
Compatible with Bluefors twisted pair DC wiring (Micro-D)
SMP connector interface for RF and RF+DC
Low insertion- and high return-loss
Gold-plated OFHC copper casing

Absolute Maximum Ratings

DC input current +/-25 mA
RF pulse amplitude +/- 20 V
Operating temperature 10 mK to 4 K

Typical Performance

RF frequency 10 kHz – 1 GHz
Insertion loss < 1.0
Return loss > 13.0 dB

Circuit Schematic

Qubit Step Response*

* Qubit frequency measured as a function of flux pulse delay. The measured response (green) agrees well with a simple, first-order model, see black dashed line.