12 research outputs found
Thermal Resonance in Signal Transmission
We use temperature tuning to control signal propagation in simple
one-dimensional arrays of masses connected by hard anharmonic springs and with
no local potentials. In our numerical model a sustained signal is applied at
one site of a chain immersed in a thermal environment and the signal-to-noise
ratio is measured at each oscillator. We show that raising the temperature can
lead to enhanced signal propagation along the chain, resulting in thermal
resonance effects akin to the resonance observed in arrays of bistable systems.Comment: To appear in Phys. Rev.
Electomigration in metals and critical currents in high Tc superconductors
SIGLEAvailable from British Library Document Supply Centre- DSC:D60674 / BLDSC - British Library Document Supply CentreGBUnited Kingdo
Stochastic signal enhancement in SQUIDs.
It is demonstrated theoretically, and with an analogue electronic model, that a weak high-frequency signal in a SQUID, and its signal/noise ratio, can be enhanced by the introduction of additional noise at the input