Quantum random number generator based on the photon number decision of   weak laser pulses
  We propose an approach to realize a quantum random number generator (QRNG) based on the photon number decision of weak laser pulses. This type of QRNG can generate true random numbers at a high speed and can be adjusted to zero bias conveniently, thus is suitable for the applications in quantum cryptography. 
Wei Wei, J. W. Zhang, Tian Liu, and Hong Guo