Resonant Phase Matching of Josephson Junction Traveling Wave Parametric Amplifiers
Abstract
We propose a technique to overcome phase mismatch in Josephson-junction traveling wave parametric amplifiers in order to achieve high gain over a broad bandwidth. Using "resonant phase matching," we design a compact superconducting device consisting of a transmission line with subwavelength resonant inclusions that simultaneously achieves a gain of 20 dB, an instantaneous bandwidth of 3 GHz, and a saturation power of -98 dBm. Such an amplifier is well suited to cryogenic broadband microwave measurements such as the multiplexed readout of quantum coherent circuits based on superconducting semiconducting, or nanomechanical elements, as well as traditional astronomical detectors.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 06, 2014
- Accession Number
- ADA624339
Entities
People
- Chris Macklin
- Irfan Siddiqi
- Kevin W O'Brien
- Xiang Zhang
Organizations
- University of California, Berkeley