期刊
PHYSICAL REVIEW LETTERS
卷 113, 期 15, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.157001
关键词
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资金
- Multidisciplinary University Research Initiative from the Air Force Office of Scientic Research (AFOSR MURI) [FA9550-12-1-0488]
- Army Research Office (ARO) [W911NF-14-1-0078]
- Office of the Director of National Intelligence (ODNI)
- Intelligence Advanced Research Projects Activity (IARPA), through the Army Research Office
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.
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