量子纠缠对原子偶极压缩的影响

研究2个纠缠的二能级原子中的1个原子在与相干光场相互作用过程中,纠缠参量θ对另1个原子的偶极压缩的影响.结果表明,原子偶极算符的∏1分量不存在压缩,而∏2分量则存在压缩,∏2分量的压缩随表征相互作用时间的参量g t和相干光振幅α的增大而增大,而随纠缠参量θ呈负单峰变化,当g t=0.7、α=10及θ=π/4时,∏2分量在产生最大压缩的情况下呈现最大的量子纠缠.

The Influence of Quantum Entanglement on the Atomic Dipole Squeezing

The impact of entanglement parameter θ on atomic dipole squeezing of one of two entangled atoms in the process of entangled another atom interacting with coherent light is studied.The results show that the component ∏1 of the atomic dipole operator does not present squeezing,but the component ∏2 does,and that the squeezing of ∏2 increases with gt representing interacting time and cohere light amplitude ｜α｜ and presents a negative single-peak curve with entanglement parameter θ.When gt=0.7,｜α｜=10 and θ=π/4,the component ∏2 takes on the max squeezing accompany the max entanglement of the quantum state.