Microwave Amplification by a Spin Maser (No. 0156)

Summary

A novel microwave amplifier that provides high amplification gain for microwave quantum technologies.

The global quantum technology market size is projected to reach USD 31 Billion, at a CAGR of 38.4%. Much more than only computing, the quantum technology market provides a foundation for improving all digital communications, applications, content, and commerce. In the realm of communications, quantum technology will influence everything from encryption to the way that signals are passed from point A to point B. One of the crucial technological issues in quantum computing or quantum information research is low-power microwave signal processing at cryogenic (millikelvin) temperatures, i.e., the amplification of tiny microwave signals with as little added noise as possible. This low noise cryogenic amplification has been realized by a device called Josephson parametric amplifiers (JPA). However, these JPAs suffer from limited dynamic range, i.e., their very low input saturation power, which limits how many qubits can be processed in a quantum computer. Here we present a promising amplifier developed by a group of researchers led by Dr. Yuimaru Kubo which solves the above problems.

Applications

• Quantum Computer
• Ultra-Sensitive Spin Resonance Spectrometer
• Cryogenic Microwave Technology

Advantages

• High Amplification Gain (30dB)
• Large Dynamic Range (larger than -70 dBm, at least more than 1000 times better)
• Near-Quantum Limited Noise Performance (Noise temperature of ~0.5 K)