High-Gain Traveling-Wave Parametric Amplifier Based on Three-Wave Mixing
High-Gain Traveling-Wave Parametric Amplifier Based on Three-Wave Mixing
We extend the theory for a Josephson-junction traveling-wave parametric amplifier (TWPA) operating in the three-wave-mixing regime and we propose a scheme for achieving high gain. The continuous three-mode model [P.K. Tien, J. Appl. Phys. 29, 1347 (1958)] is, on one hand, extended to describe a discrete chain of Josephson junctions …