Wideband superconducting parametric amplifiers based on kinetic inductance 
 (Conference Presentation)

Peter Day; ByeongHo Eom; Henry G. Leduc

doi:10.1117/12.2314203

10 July 2018 Wideband superconducting parametric amplifiers based on kinetic inductance (Conference Presentation)

Peter Day, ByeongHo Eom, Henry G. Leduc

Proceedings Volume 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX; 107081B (2018) https://doi.org/10.1117/12.2314203
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

Traveling-wave parametric amplifiers based on superconducting NbTiN films are being developed that provide gain over nearly an octave of bandwidth at microwave frequencies. The amplifiers are non-linear transmission lines, where the nonlinearity comes from the current dependence of the kinetic inductance. Amplification results from three and four-wave mixing processes, and phase matching over a wide frequency range is achieved by engineering the dispersion characteristics of the transmission line. Recent noise measurements over a wide frequency band demonstrate that the added noise of these amplifiers is close to one half photon, consistent with the quantum limit for a phase preserving amplifier. We will discuss applications of this class of amplifier to astronomical instruments.

Conference Presentation

Citation Download Citation

Peter Day, ByeongHo Eom, and Henry G. Leduc "Wideband superconducting parametric amplifiers based on kinetic inductance (Conference Presentation)", Proc. SPIE 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, 107081B (10 July 2018); https://doi.org/10.1117/12.2314203

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