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Numerical analysis of a three-wave-mixing Josephson traveling-wave parametric amplifier with engineered dispersion loadingsстатья
- Авторы: Gaydamachenko Victor, Kissling Christoph, Dolata Ralf, Zorin Alexander B.
- Журнал: Journal of Applied Physics
- Том: 132
- Номер: 15
- Год издания: 2022
- Издательство: AIP Publishing
- Местоположение издательства: United States
- Первая страница: 154401-1
- Последняя страница: 154401-11
- DOI: 10.1063/5.0111111
- Аннотация: The recently proposed Josephson traveling-wave parametric amplifier (JTWPA) based on a ladder transmission line consisting of radio-frequencysuperconducting quantum interference devices and exploiting three-wave mixing has great potential in achieving both a gain of 20 dB and a flatbandwidth of at least 4 GHz. To realize this concept in practical amplifiers, we model the advanced JTWPA circuit with periodic modulation ofthe circuit parameters (engineered dispersion loadings), which allow the basic mixing process, i.e., f_s = f_p - f_i, where f_s, f_p, and f_i are thesignal, the pump, and the idler frequencies, respectively, and efficiently suppress propagation of unwanted higher tones, including f_2p = 2f_p, f_p+s = f_p + f_s, f_p+i = f_p + f_i, etc. The engineered dispersion loadings allow achieving a sufficiently wide 3 dB-bandwidth from 3 to 9 GHz combined with a reasonably small ripple (+2 dB) in the gain-vs-frequency dependence.
- Добавил в систему: Зорин Александр Борисович