  We have measured the full counting statistics (FCS) of current fluctuations
in a semiconductor quantum dot (QD) by real-time detection of single electron
tunneling with a quantum point contact (QPC). This method gives direct access
to the distribution function of current fluctuations. Suppression of the second
moment (related to the shot noise) and the third moment (related to the
asymmetry of the distribution) in a tunable semiconductor QD is demonstrated
experimentally. With this method we demonstrate the ability to measure very low
current and noise levels.
