Bright Entangled Squeezed Photons with the Superposed Signal Light Beams

Abstract

In this paper, we have studied the statistical and squeezing properties of a pair of superposed signal-signal light beams employing the density operator and a slightly modified definition of entanglement condition. We have found that the mean photon number of the superposed light beams to be the sum of the mean photon numbers of the separate light beams. And a large part of the mean photon number is confined in a relatively small frequency interval. Moreover, the superposed bright light beams have a maximum squeezing of % 75 below the vacuum state level and occurs in 01.0 ± frequency interval. We have also clearly shown that a pair of superposed light beams are entangled at steady-state and the entanglement turned out be observed in the squeezed photons.