Control of sudden transition between classical and quantum correlations of two strongly driven atoms in dissipative cavities  

作　　者：穆青霞 

机构地区：[1]School of Mathematics and Physics, North China Electric Power University

出　　处：《Chinese Physics B》2013年第8期274-279,共6页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11205056 and 11247308);the Special Funds for the Co-construction Project of Beijing

摘　　要：We investigate analytically the dynamics of classical and quantum correlations between two strongly driven atoms, each of which is trapped inside a dissipative cavity. It is found that there exists a finite time interval during which the quantum discord initially prepared in the X-type states is not destroyed by the decay of the cavities. The sudden transition between classical correlation and quantum discord is sensitive to the initial-state parameter, the cavity decay rate, and the cavity mode-driving field detuning. Interestingly, we show that the transition time can be prolonged significantly by increasing the degree of the detuning.We investigate analytically the dynamics of classical and quantum correlations between two strongly driven atoms, each of which is trapped inside a dissipative cavity. It is found that there exists a finite time interval during which the quantum discord initially prepared in the X-type states is not destroyed by the decay of the cavities. The sudden transition between classical correlation and quantum discord is sensitive to the initial-state parameter, the cavity decay rate, and the cavity mode-driving field detuning. Interestingly, we show that the transition time can be prolonged significantly by increasing the degree of the detuning.

关 键 词：quantum discord sudden transition classical correlations 

分 类 号：O413[理学—理论物理] O562[理学—物理]