An InGaAs/InAlAs Single Photon Avalanche Diode was fabricated and characterized. Leakage current, dark count and photon count measurements were carried out on the devices from 260 to 290 K. Due to better temperature stability of avalanche breakdown in InAlAs, the device breakdown voltage varied by < 0.2 V over the 30 K temperature range studied, which corresponds to a temperature coefficient of...

We examine avalanche statistics of rainand vibrationdriven granular slides in miniature soil mounds using experimental and numerical approaches. A crossover from powerlaw to non power-law avalanche-size statistics is demonstrated as a generic driving rate ν is increased, due to diminishing timescale separation (∼ ν) between stress buildup and release. For slowly-driven mounds, the tail of the a...

We study a recently proposed equation for the avalanche distribution in the Bak-Sneppen model. We demonstrate that this equation indirectly relates t, the exponent for the power law distribution of avalanche sizes, to D, the fractal dimension of an avalanche cluster. We compute this relation numerically and approximate it analytically up to the second order of expansion around the mean-field ex...