物理学报
物理學報
물이학보
2013年
11期
42-45
,共4页
推广的二项式态%concurrence%约化Neumann熵
推廣的二項式態%concurrence%約化Neumann熵
추엄적이항식태%concurrence%약화Neumann적
generalized binomial state%concurrence%reduced Neumann entropy
在场和非线性介质原子相互作用模型下,利用concurrence和约化Neumann熵两种纠缠量度,研究推广的二项式场态和原子基态的量子纠缠动力学.结果表明concurrence与约化Neumann熵是正关联占优势;在合适的条件下,纠缠在较长时间内几乎是不变的.这有利于量子信息过程.
在場和非線性介質原子相互作用模型下,利用concurrence和約化Neumann熵兩種糾纏量度,研究推廣的二項式場態和原子基態的量子糾纏動力學.結果錶明concurrence與約化Neumann熵是正關聯佔優勢;在閤適的條件下,糾纏在較長時間內幾乎是不變的.這有利于量子信息過程.
재장화비선성개질원자상호작용모형하,이용concurrence화약화Neumann적량충규전량도,연구추엄적이항식장태화원자기태적양자규전동역학.결과표명concurrence여약화Neumann적시정관련점우세;재합괄적조건하,규전재교장시간내궤호시불변적.저유리우양자신식과정.
The dynamical entanglement in a model of the field interacted with atoms in a nonlinear medium is studied in terms of concurrence and the reduced Neumann entropy for the generalized binomial state of the field and the ground state of atoms. It is shown that concurrence is dominantly-positively correlated with the reduced Neumann entropy. The entanglement under suitable condition is nearly unchanged for a long time. This is useful for quantum information processing.
