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Optimal demodulation domain for microwave SQUID multiplexers in presence of readout system noise.

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Titel: Optimal demodulation domain for microwave SQUID multiplexers in presence of readout system noise.
Autoren: García Redondo, M. E., Müller, N. A., Salum, J. M., Ferreyro, L. P., Bonilla-Neira, J. D., Geria, J. M., Bonaparte, J. J., Muscheid, T., Gartmann, R., Almela, A., Hampel, M. R., Fuster, A. E., Ardila-Perez, L. E., Wegner, M., Platino, M., Sander, O., Kempf, S., Weber, M.
Quelle: Journal of Applied Physics; 9/21/2024, Vol. 136 Issue 11, p1-23, 23p
Schlagwörter: PARTICLE physics, SCATTERING amplitude (Physics), SOFTWARE radio, GEODETIC astronomy, PHASE noise
Abstract: The Microwave SQUID Multiplexer (μ MUX) is the device of choice for the readout of a large number of low-temperature detectors in a wide variety of experiments within the fields of astronomy and particle physics. While it offers large multiplexing factors, the system noise performance is highly dependent on the cold- and warm-readout electronic systems used to read it out, as well as the demodulation domain and parameters chosen. In order to understand the impact of the readout systems in the overall detection system noise performance, first, we extended the available μ MUX simulation frameworks, including additive and multiplicative noise sources in the probing tones (i.e., phase and amplitude noise), along with the capability of demodulating the scientific data, either in the resonator's phase or the scattering amplitude. Then, considering the additive noise as a dominant noise source, the optimum readout parameters to achieve minimum system noise were found for both open-loop and flux-ramp demodulation schemes in the aforementioned domains. Later, we evaluated the system noise sensitivity to multiplicative noise sources under the optimum readout parameters. Finally, as a case study, we evaluated the optimal demodulation domain and the expected system noise level for a typical software-defined radio readout system. This work leads to an improved system performance prediction and noise engineering based on the available readout electronics and the selected demodulation domain. [ABSTRACT FROM AUTHOR]
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Datenbank: Complementary Index
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Abstract:The Microwave SQUID Multiplexer (μ MUX) is the device of choice for the readout of a large number of low-temperature detectors in a wide variety of experiments within the fields of astronomy and particle physics. While it offers large multiplexing factors, the system noise performance is highly dependent on the cold- and warm-readout electronic systems used to read it out, as well as the demodulation domain and parameters chosen. In order to understand the impact of the readout systems in the overall detection system noise performance, first, we extended the available μ MUX simulation frameworks, including additive and multiplicative noise sources in the probing tones (i.e., phase and amplitude noise), along with the capability of demodulating the scientific data, either in the resonator's phase or the scattering amplitude. Then, considering the additive noise as a dominant noise source, the optimum readout parameters to achieve minimum system noise were found for both open-loop and flux-ramp demodulation schemes in the aforementioned domains. Later, we evaluated the system noise sensitivity to multiplicative noise sources under the optimum readout parameters. Finally, as a case study, we evaluated the optimal demodulation domain and the expected system noise level for a typical software-defined radio readout system. This work leads to an improved system performance prediction and noise engineering based on the available readout electronics and the selected demodulation domain. [ABSTRACT FROM AUTHOR]
ISSN:00218979
DOI:10.1063/5.0222656