  In this paper, we proposed a pseudo antibunching effect on one single photon
detector. Though this pseudo antibunching effect is not a sign of the non
classical properties of the light field as the antibunching effect. It will
give some intresting properties to the photon statistics of the related fields,
such as the anticorrelation of photon number or intensity fluctuations of the
two input fields. This effect may have some potential application in future
especially in the quantum information field.
