A three-stage GaAs pHEMT MMIC cryo-LNA achieves about 5 K noise temperature, over 40 dB gain, and enables 98.3% single-shot qubit readout fidelity without a Josephson parametric amplifier.
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A C-Band Cryogenic GaAs MMIC Low-Noise Amplifier for Quantum Applications
A three-stage GaAs pHEMT MMIC cryo-LNA achieves about 5 K noise temperature, over 40 dB gain, and enables 98.3% single-shot qubit readout fidelity without a Josephson parametric amplifier.