BiasT Aluminum casing Mounting holes on backside

Flux BiasT

High-Fidelity Qubit Control​

YQ-BT-2G | 10 kHz – 2 GHz, 50 Ω

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Our specialized BiasT solution is designed to enable high-fidelity two-qubit gates on flux-tunable superconducting quantum computers. This component provides outstanding linearity and superior noise suppression.

Flux-tunable qubits are highly sensitive to control signal noise, which can be effectively filtered using our BiasT. Additionally, achieving high-fidelity control of qubit frequency requires compensating for the transient response of the control line. This precompensation depends on the system’s linearity, a characteristic that our BiasT ensures. Learn more about the importance of linerarity in our Application Note, see below.

Key performance metrics are:

  • Highly linear and first-order transfer function
  • 10 kHz to 2 GHz frequency range for RF signals
  • Low-pass filter for DC with 10 Hz cutoff and 60 dB of suppression up to 1 GHz
  • Precision 1 kΩ* (±5 ppm/°C) bias resistor for DC path (*Contact YQuantum for different bias resistance values)
  • Low insertion- and high return-loss (> 16.0 dB)

Absolute Maximum Ratings

DC input voltage +/-20 V
RF input power +32 dBm
Operating temperature -55 to 85 °C

Typical Performance

DC input voltage +/-20 V
RF input power +32 dBm
Operating temperature -55 to 85 °C

Circuit Schematic

Step Response into 50 Ω

Scattering-Parameters

Drawing Casing [mm]

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