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arXiv · 2409.18349

Influence of bias voltage noise on the Inelastic Cooper-Pair Tunneling Amplifier (ICTA)

Ulrich Martel·Romain Albert·Florian Blanchet·Joël Griesmar·Gabriel Ouellet·Hugo Therrien·Naveen Nehra·Nicolas Bourlet·Ambroise Peugeot·Max Hofheinz
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Abstract

We experimentally show that the Inelastic Cooper-Pair Tunneling Amplifier (ICTA), implementing a DC-powered parametric amplification scheme, can achieve gain and noise performance similar to that of Josephson parametric amplifiers. Using experimental data and simulations, we show that the ICTA has near-quantum-limited noise as long as the integral voltage bias noise divided by the superconducting flux quantum is below the amplification bandwidth. We observe a gain of 20 dB with noise below 1.7 times the quantum limit when the full width at half maximum of the integral voltage noise, expressed as frequency, is 5.6 MHz.

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Ulrich Martel, Romain Albert, Florian Blanchet, Joël Griesmar, Gabriel Ouellet, Hugo Therrien, Naveen Nehra, Nicolas Bourlet, Ambroise Peugeot, Max Hofheinz. 2024-09-27. Influence of bias voltage noise on the Inelastic Cooper-Pair Tunneling Amplifier (ICTA). https://doi.org/10.1063/5.0240842

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