Demonstrated tunable Kerr nonlinearity and three-wave mixing in superconducting resonators using Al-InAs weak links, achieving independent control via magnetic flux and electrostatic gating—enabling parametric amplification.

#QuantumCircuits #ParametricAmplification #Research

Two-photon parametric driving exponentially enhances cavity-qubit coupling in superconducting quantum batteries, enabling 12.5× faster charging while suppressing environmental decoherence through squeezed states and dark-state protection.

#QuantumBatteries #ParametricAmplification #Research

USTC researchers built a GaAs double quantum dot-based on-chip parametric amplifier achieving >11 dB gain and 2× SNR improvement for qubit readout in a reconfigurable superconducting microwave cavity circuit via four-wave mixing.

#QuantumComputing #ParametricAmplification #QuantumDots