双模压缩真空态光场作用下耦合双原子的Wigner-Yanase偏态信息-《集美大学学报（自然科学版）》

文章信息/Info

Title:: The Wigner-Yanase Information of Two Coupled Two-level Atoms Interacting with Two-mode Squeezed Vacuum Field

Keywords:: two-mode squeezed vacuum state; Wigner-Yanase skew information; light field; coupled; two-level atom; dipole-dipole interaction 

摘要:: 研究了与双模压缩真空态光场作用过程中耦合双原子的Wigner-Yanase偏态信息．结果表明，当光场压缩因子较小时，光场与原子间相互作用和原子间偶极-偶极相互作用共同决定了原子的总Wigner-Yanase偏态信息演化的周期；增强原子间偶极-偶极相互作用，可以抵抗原子的总Wigner-Yanase偏态信息的丢失；光场压缩因子对原子的总Wigner-Yanase偏态信息的丢失起着重要的作用，当光场压缩因子较大时，原子的总Wigner-Yanase偏态信息会完全丢失

Abstract:: The change of the total Wigner-Yanase skew information of two coupled two-level atoms interacting with two-mode squeezed vacuum state field was investigated.The results showed that when the squeezed factor was smaller，the interaction between atoms and field,the dipole-dipole interaction of two atoms determined evolution period of the total Wigner-Yanase skew information together;enhancing the dipole-dipole interaction of two atoms could resist the loss of the total Wigner-Yanase skew information;the squeezed factor of light field played an important role in the loss of the total Wigner-Yanase skew information，and when the squeezed factor was bigger，the total Wigner-Yanase skew information of atoms would lose completely.