supported by the National Natural Science Foundation of China(NSFC)(Grant Nos.11234008,11361161002,61571276,and 11654002);Natural Science Foundation of Shanxi Province(Grant No.2015011007);Shanxi Scholarship Council of China(Grant No.2015002)
The squeezed state was experimentally produced in the four wave mixing process for the first time thirty years ago [1]. Its intrinsic nonclassical property has always attracted the attention of the scientists, and it ...