Overlap junctions for superconducting quantum electronics and amplifiers
| Autor: | C. H. Liu, Volodymyr Monarkha, Corey Rae McRae, Sungoh Park, Slawomir Simbierowicz, Silvia Zorzetti, David P. Pappas, Haozhi Wang, Ruichen Zhao, Junling Long, Mustafa Bal, Tongyu Zhao, Russell E. Lake, Daniil Frolov, Roman Pilipenko, Alexander Romanenko, Robert McDermott |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Physics Quantum optics Josephson effect Fabrication Physics and Astronomy (miscellaneous) business.industry Amplifier Condensed Matter - Superconductivity FOS: Physical sciences 02 engineering and technology Applied Physics (physics.app-ph) Physics - Applied Physics 021001 nanoscience & nanotechnology 01 natural sciences Noise (electronics) Superconductivity (cond-mat.supr-con) Qubit Condensed Matter::Superconductivity 0103 physical sciences Insertion loss Optoelectronics 0210 nano-technology business Coherence (physics) |
| Popis: | Due to their unique properties as lossless, nonlinear circuit elements, Josephson junctions lie at the heart of superconducting quantum information processing. Previously, we demonstrated a two-layer, submicrometer-scale overlap junction fabrication process suitable for qubits with long coherence times. Here, we extend the overlap junction fabrication process to micrometer-scale junctions. This allows us to fabricate other superconducting quantum devices. For example, we demonstrate an overlap-junction-based Josephson parametric amplifier that uses only 2 layers. This efficient fabrication process yields frequency-tunable devices with negligible insertion loss and a gain of ~ 30 dB. Compared to other processes, the overlap junction allows for fabrication with minimal infrastructure, high yield, and state-of-the-art device performance. 5 pages, 4 figures, 1 table. Submitted to Applied Physics Letters. After it is published, it will be found at https://publishing.aip.org/resources/librarians/products/journals/ |
| Databáze: | OpenAIRE |
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