Quantum random number generator

The utility model discloses a quantum random number generator, pulse laser works in the gain switch mode for output repetition rate is f's narrow pulsed laser sequence, pulse laser's repetition rate f passes through the minute adjustment, in order to obtain the accurate matching of narrow pulsed laser sequence and time delay interannular, narrow pulsed laser sequence makes two pulse superpositions and takes place and interfere through the time delay ring, photoelectric detector is used for surveying the interference result to obtain pulse signal at random, the comparator is used for rightly the comparison is carried out to pulse signal's range at random to export bit at random: if electric signal amplitude is between [ V - delta, V+ delta ] in photoelectric detector output, then export bit 0, if the range is greater than the V+ DELTA, output + 1, if the range is less than the V - DELTA, output - 1. The utility model discloses fast, efficient, output is stabilized and accurate. 本实用新型公开了一种量子随机数发生器，脉冲激光器工作在增益开关模