Josephson Parametric Amplifiers for Rapid High-Fidelity Measurement of Solid-State Qubits

Explore quantum physics and amplifier technology in this 58-minute research talk that delves into the development and implementation of Josephson parametric amplifiers (JPAs) for quantum computing applications. Learn about the fundamental quantum limits of amplifier noise and discover how JPAs achieve nearly-quantum-limited microwave amplification for precise qubit measurements. Examine the SNAIL parametric amplifier circuit design and understand recent improvements in power handling and information throughput capabilities crucial for large-scale quantum information processors. Follow the development of innovative JPA technology incorporating Josephson Junction Field Effect Transistors (JJFET) using InAs-Al superconductor-semiconductor heterostructures. Presented by Dr. Shyam Shankar, a distinguished researcher from the University of Texas at Austin with extensive experience in quantum computing experiments and quantum-limited amplifier development at Yale University.