Elias Lehman

My research focuses on the development of ultra-sensitive amplifiers based on superconducting circuits. These devices, known as Traveling Wave Parametric Amplifiers (TWPAs), are essential components in quantum measurement and metrology owing to their exceptionally low noise and relatively high gain.

TWPAs play a pivotal role across several areas of modern physics:

• Quantum computing: In superconducting quantum computers, the TWPA serves as the first and most critical stage of the readout chain. Its broad amplification bandwidth is increasingly vital as quantum processors scale to larger numbers of qubits.
• Particle physics: In haloscope experiments—designed to detect axions, a candidate dark matter particle—TWPAs extend the operational bandwidth and enable exploration of new frequency ranges.
• Astronomy: In radio and microwave astronomy, where detectors must capture faint signals across wide frequency bands, the versatility of TWPAs makes them well suited to supporting improved observational sensitivity.