Wide-Band Josephson Parametric Amplifier (WB-JPA) Superconducting Low-Noise Amplifier for Quantum Computing. Fast and high-fidelity qubit readout in the microwave domain.

Fast and high-fidelity qubit readout in the microwave domain

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Key Capabilities

Designed for use at millikelvin temperatures, the amplifier features over 20dB of gain with a center frequency that can be tuned with an on-chip bias line. The amplifier can be operated in either four-wave mixing, or three-wave mixing with an external bias tee.


  • Improved qubit readout fidelity, reduced noise < 300 mK @ 6.8GHz
  • Large bandwidth supports multiplexed readout
  • Simple tune-up and low insertion loss for easy integration with qubit experiments


  • Gain: 20 dB
  • Tunable Center Frequency: 5.0 – 7.0 GHz
  • Instantaneous Bandwidth: 300 MHz
  • Noise Temperature: 295 mK @ 6.8 GHz
  • Matched Input: 50 Ohm
  • Die: 4 x 4 mm
  • Available as bare die
  • Compact aluminum cryo-package, 2.92mm K connectors
  • 6-8 week delivery on order
JPA Gain Measured at 15 mK ad Measured Noise Temperature for Quantum Computing