Regensburg 2022 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 31: Superconducting Electronics and Cryogenics: Poster Session
TT 31.23: Poster
Thursday, September 8, 2022, 15:00–18:00, P1
Flux-pumped Josephson Traveling Wave Parametric Amplifier — •Daniil E. Bazulin1,2, Kedar E. Honasoge1,2, Leon Koch1,2, Yuki Nojiri1,2, Thomas Luschmann1,2, Achim Marx1, Stefan Filipp1,2,3, and Kirill G. Fedorov1,2 — 1Walther-Meißner-Institut, 85748 Garching, Germany — 2Physik-Department, Technische Universität München, 85748 Garching, Germany — 3Munich Center for Quantum Science and Technology (MCQST), 80799 Munich, Germany
Development of scalable superconducting quantum computers requires an efficient read-out of multiple quantum bits. This goal can be achieved by exploiting broadband Josephson Traveling Wave Parametric Amplifiers (JTWPAs). These are typically based on arrays of superconducting nonlinear elements, such as various types of Superconducting Quantum Interference Devices (SQUIDs). Here, we report on fabrication and characterization of a specific type of the JTWPA based on aluminium asymmetric SQUIDs exploiting the three-wave mixing down-conversion process. With this approach we circumvent inherent JTWPA problems with phase-matching and are able to spatially separate signal and pump paths.