对相干态光场与混合态原子间的纠缠传递 - 河北师范大学学报.pdfVIP

35 / 2 / 河北师范大学学报/ / Vol. 35 No. 2 2011 3 JOURNALOFHEBEI NORMAL UNIVERSITY/ Natural Science Edition/ Ma r. 2011 对相干态光场与混合态原子间的纠缠传递 张晋华 ( , 034000) : 2 , , , 2 . , 2 . , 2 2 q , q q . : ; ; ; : O 431. 1 : A : 2011) Entanglement Transf er from Pai rcoherent States to Two Mixed Atoms ZHANG Jinhua ( Department f Physics, Xinzh u Teachers University, Shanxi Xinzh u 034000,China) Abstract: The entanglement transfer fr m pairc herent states t mixed at ms w ith different f rms f inten sitydependent c upling is studied. Its f und that suitable f rm f intensitydependent c upling can enhance the entanglement transfer and makes it ev lve peri dically. Even f r the mixed initial at mic states, the max imum value f entanglement and the peri dical ev lvement are kept. Its als sh w n that the ph t n number difference between the tw m des plays a key r le. When is dd, the maximum entanglement betw een the at ms is less than that w hen is even. Key words: entanglement; pairc herent states; intensitydependent c upling; mixed at ms , , [ 15] , . [ 6] JaynessCumming , [ 7] 2 . , [ 8] . [ 9] [ 10] [ 11] [ 12] JC . , , [ 13] . . , ; , , 2 . 1 n | F = Aq | n+ q, n , (1) n= 0 n !( n + q) ! : :( :( 1982) , , , , , . 136 q : = r exp( i), r = | | ,