Detection of signals in presence of noise through Josephson junction switching currents
O. V. Pountougnigni, R. Yamapi, C. Tchawoua, V. Pierro, G. Filatrella
DOI 10.1103/PhysRevE.101.052205 · Physical Review E
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Josephson junctions can be employed to reveal a sinusoidal signal in presence of Gaussian noise. To mimic realistic setups, the detection is performed linearly ramping the bias current until a switch to the finite voltage occurs; the analysis of the resulting switching currents can be exploited to decide about the presence of the harmonic drive. The signal is applied in two conditions: with an unknown initial phase (incoherent strategy) and with a known initial phase (coherent strategy). In both conditions, the analysis of the efficiency of the detection, performed through the signal-to-noise ratio, as estimated by the Kumar-Carrol index, shows that the dependence upon the Josephson junction ramp rate is beneficial, especially for relatively fast speed. One can conclude that the collection of the switching currents is a robust technique, and thus it is possible to exploit the advantages of a predetermined finite time to collect the data.
Similar papers
Detection of noise-corrupted sinusoidal signals with Josephson junctions
similarity 0.91Giovanni Filatrella & Vincenzo Pierro
Source status unknown — claims are unverified
Josephson-Based Scheme for the Detection of Microwave Photons
similarity 0.90Claudio Guarcello et al.
Source status unknown — claims are unverified
Josephson-based scheme for the detection of microwave photons
similarity 0.87Claudio Guarcello et al. · 2021 · arXiv:2108.00976
Source status unknown — claims are unverified
Josephson-based Threshold Detector for Lévy-Distributed Current Fluctuations
similarity 0.85Claudio Guarcello et al.
Source status unknown — claims are unverified
Detecting Current Noise with a Josephson Junction in the Macroscopic Quantum Tunneling Regime
similarity 0.84J. T. Peltonen et al. · 2006 · arXiv:cond-mat/0611593
Source status unknown — claims are unverified
Suppression of Timing Errors in Short Overdamped Josephson Junctions
similarity 0.83Andrey L. Pankratov & Bernardo Spagnolo
Source status unknown — claims are unverified