TY - JOUR
T1 - Suppression of timing errors in short overdamped Josephson junctions
AU - Spagnolo, Bernardo
AU - Pankratov, Andrey L.
PY - 2004
Y1 - 2004
N2 - The influence of fluctuations and periodical driving on temporal characteristics of short overdamped Josephson junctions is analyzed. We obtain the standard deviation of the switching time in the presence of a dichotomous driving force for arbitrary noise intensity and in the frequency range of practical interest. For sinusoidal driving the resonant activation effect has been observed. The mean switchingtime and its standard deviation have a minimum as a function of driving frequency. As a consequence the optimization of the system for fast operation will simultaneously lead to the minimization of timing errors.
AB - The influence of fluctuations and periodical driving on temporal characteristics of short overdamped Josephson junctions is analyzed. We obtain the standard deviation of the switching time in the presence of a dichotomous driving force for arbitrary noise intensity and in the frequency range of practical interest. For sinusoidal driving the resonant activation effect has been observed. The mean switchingtime and its standard deviation have a minimum as a function of driving frequency. As a consequence the optimization of the system for fast operation will simultaneously lead to the minimization of timing errors.
KW - Fokker-Planck equation
KW - Langevin equation; Fluctuation phenomena
KW - Superconducting devices; Stochastic analysis methods
KW - and Brownian motion;
KW - noise
KW - random processes
KW - Fokker-Planck equation
KW - Langevin equation; Fluctuation phenomena
KW - Superconducting devices; Stochastic analysis methods
KW - and Brownian motion;
KW - noise
KW - random processes
UR - http://hdl.handle.net/10447/8190
M3 - Article
SN - 0031-9007
VL - 93
SP - 177001/1-4
JO - Physical Review Letters
JF - Physical Review Letters
ER -