Cosmic-ray flux detected by an IR bolometer operated on board of a stratospheric aircraft

Lanfranchi, M.; Carli, B.; Gignoli, A; Lee, C; Ridolfi, Marco

doi:10.1016/s1350-4495(99)00024-9

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…Alternatively, it could be that free charge is generated by cosmic rays that are absorbed in the qubit substrate or in the material of the sample enclosure. However, the flux of cosmic rays is only 0.025/cm 2 · s at sea level [37][38][39], likely too low to account for observed rate of discrete charge jumps.…”

Section: Simulation Of Discrete Charging Eventsmentioning

confidence: 94%

Anomalous charge noise in superconducting qubits

et al. 2019

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We have used Ramsey tomography to characterize charge noise in a weakly charge-sensitive superconducting qubit. We find a charge noise that scales with frequency as 1/f α over 5 decades with α = 1.93 and a magnitude Sq(1 Hz) = 2.9 × 10 −4 e 2 /Hz. The noise exponent and magnitude of the low-frequency noise are much larger than those seen in prior work on single electron transistors, yet are consistent with reports of frequency noise in other superconducting qubits. Moreover, we observe frequent large-amplitude jumps in offset charge exceeding 0.1e; these large discrete charge jumps are incompatible with a picture of localized dipole-like two-level fluctuators. The data reveal an unexpected dependence of charge noise on device scale and suggest models involving either charge drift or fluctuating patch potentials.

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Section: Simulation Of Discrete Charging Eventsmentioning

confidence: 94%

Anomalous charge noise in superconducting qubits

et al. 2019

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“…Since the pyroelectric detectors used for the infrared channels show sensitivity to acoustic and electronic transients, a procedure of identification and correction of transient phenomena is applied to the infrared signals. EGU from the algorithm used to correct the cosmic ray transients detected by bolometric sensors (Lanfranchi et al, 1999), and makes use of wavelet transform for the identification of signal spikes (Bianchini et al, 2002). In order to correctly perform the resampling, also a compensation of the acquisition system response is needed, since a time delay between reference laser and infrared signals leads to significant sampling errors.…”

Section: Interferogram Filtering and Resamplingmentioning

confidence: 99%

Technical Note: REFIR-PAD level 1 data analysis and performance characterization

Bianchini¹,

Palchetti²

2008

Preprint

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Abstract. The outgoing long-wave radiation from the Earth's atmosphere in the far infrared spectral region is mostly unexplored, while is well recognized that the water vapour contribution to greenhouse trapping is dominant in this region. The Radiation Explorer in the Far InfraRed (REFIR) study has proven the feasibility of a space-borne Fourier transform spectrometer able to perform the measurement in the 100–1100 cm−1 range with a resolution of 0.5 cm−1. Following this work a prototype of the spectrometer named REFIR-PAD (Prototype for Applications and Development) has been developed to observe the atmospheric radiance from both ground-based sites and from stratospheric balloon platforms. In this work we describe the REFIR-PAD level 1 data analysis procedure, that, starting from raw instrumental data produces the calibrated atmospheric spectral radiance. Performances of the procedure are also described.

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“…The system used is directly derived from the algorithm used to correct the cosmic ray transients detected by bolometric sensors (Lanfranchi et al, 1999), and makes use of wavelet transform for the identification of signal spikes (Bianchini et al, 2002).…”

Section: Interferogram Filtering and Resamplingmentioning

confidence: 99%

Technical Note: REFIR-PAD level 1 data analysis and performance characterization

Bianchini

Palchetti

2008

Atmos. Chem. Phys.

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Abstract. The outgoing long-wave radiation from the Earth's atmosphere in the far infrared spectral region is mostly unexplored, while is well recognized that the water vapour contribution to greenhouse trapping is dominant in this region. The Radiation Explorer in the Far InfraRed (RE-FIR) study has proven the feasibility of a space-borne Fourier transform spectrometer able to perform the measurement in the 100-1100 cm −1 range with a resolution of 0.5 cm −1 . Following this work a prototype of the spectrometer named REFIR-PAD (Prototype for Applications and Development) has been developed to observe the atmospheric radiance from both ground-based sites and from stratospheric balloon platforms. In this work we describe the REFIR-PAD level 1 data analysis procedure, that, starting from raw instrumental data produces the calibrated atmospheric spectral radiance. Performances of the procedure are also described.

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Cosmic-ray flux detected by an IR bolometer operated on board of a stratospheric aircraft

Cited by 4 publications

References 13 publications

Anomalous charge noise in superconducting qubits

Anomalous charge noise in superconducting qubits

Technical Note: REFIR-PAD level 1 data analysis and performance characterization

Technical Note: REFIR-PAD level 1 data analysis and performance characterization

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