Abstract
We develop the concept of quasi-phasematching (QPM) by implementing it in the recently proposed Josephson traveling-wave parametric amplifier (JTWPA) with three-wave mixing (3WM). The amplifier is based on a ladder transmission line consisting of flux-biased radio frequency superconducting quantum interference devices (SQUIDs) whose nonlinearity is of χ(2)-type. QPM is achieved in the 3WM process, ωp=ωs+ωi (where ωp, ωs, and ωi are the pump, signal, and idler frequencies, respectively) due to designing the JTWPA to include periodically inverted groups of these SQUIDs that reverse the sign of the nonlinearity. Modeling shows that the JTWPA bandwidth is relatively large (∼ 0.4ωp) and flat, while unwanted modes, including ω2p=2ωp, ω+=ωp+ωs, and ω−=2ωp−ωs, are strongly suppressed with the help of engineered dispersion.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
