Experimental generation of multimode quantum correlations between a conical probe and a conical conjugate based on a four-wave mixing process

Multimode quantum correlations and entanglements has drawn much attention recently due to its importance for both fundamental science the future development of information processing communication. Here, by using a four-wave mixing process with conical pump beam probe beam, we experimentally generate multimode between conjugate also observe about –2.6-dB intensity-difference squeezing these two beams. In addition, find optimal value each parameter in this scheme further applications. Besides, multi-spatial-mode nature generated correlated beams is shown comparing variation tendencies noise under global attenuation local cutting attenuation. Our may potential applications