Broadband lumped-element Josephson parametric amplifier with single-step lithography

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Research units

  • Moscow Institute of Physics and Technology


We present a lumped-element Josephson parametric amplifier (JPA) fabricated using a straightforward e-beam lithography process. Our strongly coupled flux-pumped JPA achieves a gain of 20 dB with a bandwidth of 95 MHz around 5 GHz, while the center frequency is tunable by more than 1 GHz, with the additional possibility for rapid tuning by varying the pump frequency alone. Analytical calculations based on the input-output theory reproduce our measurement results closely.


Original languageEnglish
Article number152601
Pages (from-to)1-4
Number of pages4
JournalApplied Physics Letters
Issue number15
Publication statusPublished - 15 Apr 2019
MoE publication typeA1 Journal article-refereed

ID: 33496045