The growing interest in quantum technologies, from fundamental physics experiments to quantum computing, demands for extremely performing electronics only adding the minimum amount of noise admitted by quantum mechanics to the input signal (i.e. quantum-limited electronics). Superconducting microwave amplifiers, due to their dissipationless nature, exhibit outstanding performances in terms of noise (quantum limited), and gain. However, bandwidth and saturation power still show space for substantial improvement. Within the DARTWARS* collaboration, we are developing state-of-the-art microwave superconducting amplifiers based on Josephson junction arrays and on distributed kinetic inductance transmission lines. Here we report the realization of a setup for the characterization of the performances of Josephson Traveling-Wave Parametric Amplifiers (JTWPA) at a temperature of 300 mK. Although in the final experimental setup these amplifiers will operate at a base temperature of about 20 mK, their characterization at 300 mK allows to evidence the main aspects of their performances, but the ultimate noise level. This represents a quick and relatively inexpensive way to test these superconductive devices that can be of help to improve their design and fabrication. IEEE

Granata, V., Avallone, G., Barone, C., Borghesi, M., Capelli, S., Carapella, G., et al. (2022). Characterization of Traveling-Wave Josephson Parametric Amplifiers at T = 0.3 K. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1-7 [10.1109/TASC.2022.3214656].

Characterization of Traveling-Wave Josephson Parametric Amplifiers at T = 0.3 K

Borghesi, M.;Capelli, S.;Faverzani, M.;Ferri, E.;Giachero, A.;Labranca, D.;Nucciotti, A.;Origo, L.;Zannoni, M.
2022

Abstract

The growing interest in quantum technologies, from fundamental physics experiments to quantum computing, demands for extremely performing electronics only adding the minimum amount of noise admitted by quantum mechanics to the input signal (i.e. quantum-limited electronics). Superconducting microwave amplifiers, due to their dissipationless nature, exhibit outstanding performances in terms of noise (quantum limited), and gain. However, bandwidth and saturation power still show space for substantial improvement. Within the DARTWARS* collaboration, we are developing state-of-the-art microwave superconducting amplifiers based on Josephson junction arrays and on distributed kinetic inductance transmission lines. Here we report the realization of a setup for the characterization of the performances of Josephson Traveling-Wave Parametric Amplifiers (JTWPA) at a temperature of 300 mK. Although in the final experimental setup these amplifiers will operate at a base temperature of about 20 mK, their characterization at 300 mK allows to evidence the main aspects of their performances, but the ultimate noise level. This represents a quick and relatively inexpensive way to test these superconductive devices that can be of help to improve their design and fabrication. IEEE
Articolo in rivista - Articolo scientifico
Bandwidth; Josephson junctions; Microwave amplifiers; Physics; Quantum computing; Quantum mechanics; Qubit readout; Superconducting device noise; Superconducting microwave devices; Superconducting microwave devices; Superconducting transmission lines;
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Granata, V., Avallone, G., Barone, C., Borghesi, M., Capelli, S., Carapella, G., et al. (2022). Characterization of Traveling-Wave Josephson Parametric Amplifiers at T = 0.3 K. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1-7 [10.1109/TASC.2022.3214656].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/394168
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