Three-wave mixing in Josephson travelling-wave parametric amplifiers
Licentiate thesis, 2022
To recover the high gain predicted by the continuous three-mode model, we propose to engineer a TWPA with dispersive features to create a two-band dispersion relation, either by adding resonant phase matching (RPM) features, or by periodically modulating the parameters of the chain. By placing the pump frequency within the upper band, close to the cutoff frequency, while placing the signal in the lower band, we prove that there exists a sweet spot where the signal and the pump are phase matched while the up-conversion is inhibited. We solve the discrete equations for the RPM-based TWPA and show that the gain is expected to grow exponentially with the length of the TWPA.
three-wave mixing
lumped-element
four-wave mixing
SNAIL
Josephson junction
travelling-wave parametric amplifier
parametric amplifier
parametric amplification
resonant phase matching.
rf-SQUID
Author
Hampus Renberg Nilsson
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
Hampus Renberg Nilsson, Anita Fadavi Roudsari, Daryoush Shiri, Per Delsing, Vitaly Shumeiko, A high gain travelling-wave parametric amplifier based on three-wave mixing
Areas of Advance
Nanoscience and Nanotechnology (SO 2010-2017, EI 2018-)
Subject Categories
Other Physics Topics
Nano Technology
Infrastructure
Nanofabrication Laboratory
Technical report MC2 - Department of Microtechnology and Nanoscience, Chalmers University of Technology: 451
Publisher
Chalmers
Kollektorn, Kemivägen 9
Opponent: Prof. Magnus Karlsson, Department of Microtechnology and Nanoscience, Chalmers University of Technology, Sweden