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arXiv · 1509.09280

Low-noise kinetic inductance traveling-wave amplifier using three-wave mixing

Michael R. Vissers·Robert P. Erickson·Hsiang-Sheng Ku·Leila Vale·Xian Wu·Gene Hilton·David P. Pappas
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Abstract

We have fabricated a wide-bandwidth, high dynamic range, low-noise cryogenic amplifier based on a superconducting kinetic inductance traveling-wave device. The device was made from NbTiN and consisted of a long, coplanar waveguide on a silicon chip. By adding a DC current and an RF pump tone we are able to generate parametric amplification using three-wave mixing. The devices exhibit gain of more than 15 dB across an instantaneous bandwidth from 4 to 8 GHz. The total usable gain bandwidth, including both sides of the signal-idler gain region, is more than 6 GHz. The noise referred to the input of the devices approaches the quantum limit, with less than 1 photon excess noise. Compared to similarly constructed four-wave mixing amplifiers, these devices operate with the RF pump at $\sim$20 dB lower power and at frequencies far from the signal. This will permit easier integration into large scale qubit and detector applications.

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Michael R. Vissers, Robert P. Erickson, Hsiang-Sheng Ku, Leila Vale, Xian Wu, Gene Hilton, David P. Pappas. 2015-09-30. Low-noise kinetic inductance traveling-wave amplifier using three-wave mixing. https://doi.org/10.1063/1.4937922

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