Academic Journal
Flux-pumped impedance-engineered broadband Josephson parametric amplifier
| العنوان: | Flux-pumped impedance-engineered broadband Josephson parametric amplifier |
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| المؤلفون: | Grebel, J., Bienfait, A., Dumur, É., Chang, H.-S., Chou, M.-H., Conner, C. R., Peairs, G. A., Povey, R. G., Zhong, Y. P., Cleland, A. N. |
| المساهمون: | Argonne National Laboratory, U.S. Department of Energy, National Science Foundation, Army Research Laboratory |
| المصدر: | Applied Physics Letters ; volume 118, issue 14 ; ISSN 0003-6951 1077-3118 |
| بيانات النشر: | AIP Publishing |
| سنة النشر: | 2021 |
| الوصف: | Broadband quantum-limited amplifiers play a critical role in the single-shot readout of superconducting qubits, but a popular implementation, the traveling wave parametric amplifier, involves a complex design and fabrication process. Here, we present a simple design for a Josephson parametric amplifier, using a lumped element resonator comprising a superconducting quantum interference device whose useful bandwidth is enhanced with an on-chip impedance-matching circuit. We demonstrate a flux-coupling geometry that maximizes the coupling to the Josephson loop and minimizes spurious excitation of the amplifier resonant circuit. The amplifier, which operates in a flux-pumped mode, is demonstrated with a power gain of more than 20 dB over a bandwidth of about 300 MHz, where approximate noise measurements indicate quantum-limited performance. A procedure is given for optimizing the bandwidth for this kind of amplifier, using a linearized circuit simulation while minimizing non-linearities. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1063/5.0035945 |
| DOI: | 10.1063/5.0035945/14546990/142601_1_online.pdf |
| الاتاحة: | http://dx.doi.org/10.1063/5.0035945 https://aip.scitation.org/doi/am-pdf/10.1063/5.0035945 https://pubs.aip.org/aip/apl/article-pdf/doi/10.1063/5.0035945/14546990/142601_1_online.pdf |
| Rights: | https://publishing.aip.org/authors/rights-and-permissions |
| رقم الانضمام: | edsbas.DE73C96 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1063/5.0035945 |
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