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

• URL: http://arxiv.org/abs/2409.18349v1
• Date: Fri, 27 Sep 2024 00:02:58 GMT
• Title: Influence of bias voltage noise on the Inelastic Cooper-Pair Tunneling Amplifier (ICTA)
• Authors: Ulrich Martel, Romain Albert, Florian Blanchet, Joël Griesmar, Gabriel Ouellet, Hugo Therrien, Naveen Nehra, Nicolas Bourlet, Max Hofheinz,
• Abstract summary: We experimentally 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.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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