The squeezing entangled state of two particles with unequal mass  

作　　者：杨阳 范洪义 

机构地区：[1]Department of Modern Physics,University of Science and Technology of China [2]Department of Material Science and Engineering,University of Science and Technology of China

出　　处：《Chinese Physics B》2013年第3期143-145,共3页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 10975125)

摘　　要：For two unequal-mass particles,we construct the entangled state representation and then derive the corresponding squeezing operator.This squeezing operator has a natural realization in the entangled state representation,which exhibits the intrinsic relation between squeezing and quantum entanglement.This squeezing operator involves both two-mode squeezing and the direct product of two single-mode squeezings.The maximum squeezing occurs when the two particles possess equal mass.When the two particles＇ mass difference becomes large,the component of the two single-mode squeezings becomes dominant.For two unequal-mass particles,we construct the entangled state representation and then derive the corresponding squeezing operator.This squeezing operator has a natural realization in the entangled state representation,which exhibits the intrinsic relation between squeezing and quantum entanglement.This squeezing operator involves both two-mode squeezing and the direct product of two single-mode squeezings.The maximum squeezing occurs when the two particles possess equal mass.When the two particles＇ mass difference becomes large,the component of the two single-mode squeezings becomes dominant.

关 键 词：squeezing operator integration within an ordered product（IWOP） technique entangled state representation 

分 类 号：O431.2[机械工程—光学工程]