Investigation of the influence of extra noises in seed beams on continuous-variable entanglement generation
商娅娜, 闫智辉, Xiaojun Jia, 苏晓龙, 谢常德 · Chinese Physics B · 2011
The influence of the extra classical noises in seed beams on the entanglement between the signal and the idler modes of the output fields generated by a non-degenerate optical parametric amplifier operating at deamplification is investigated theoretically and experimentally. With the increase of the extra classical noises in the seed beams, the correlation degree of the output entangled optical fields, which is scaled by the quantum noise limit, decreases rapidly. The experimental results are in good agreement with the theoretical calculations.