Traveling-Wave Parametric Amplifier with Passive Reverse Isolation

Demonstrates a multistage traveling-wave parametric amplifier that combines near-quantum-limited forward gain with passive in-band reverse isolation.

Key Results

• 20 dB forward gain across 1.6 GHz
• More than 35 dB passive reverse isolation
• Noise performance at 1.7 times the quantum limit

Links

• Journal: Physical Review X
• arXiv: 2505.04059

Zoo Links

• cryogenic-amplification