量子纠缠对原子偶极压缩的影响

The Influence of Quantum Entanglement on the Atomic Dipole Squeezing

关键词:  量子纠缠  纠缠参量  偶极压缩

Key words:  quantum entanglement  parameter of entanglement  dipole squeezing

摘要:

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gt和相干光振幅|T|的增大而增大,而随纠缠参量θ呈负单峰变化,当gt=0.7、|T|=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.

Abstract:

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 |T| and presents a negative single-peak curve with entanglement parameter θ.When gt=0.7,|T|=10 and θ=π/4, the component ∏₂ takes on the max squeezing accompany the max entanglement of the quantum state.