%0 Journal Article
%T Quantum Fisher information and chaos in the system of Bose-Einstein condensate<br>玻色-爱因斯坦凝聚系统的量子Fisher信息与混沌
%A Song Li-Jun
%A Yan Dong
%A Liu Yie
%A <br>宋立军
%A 严冬
%A 刘烨
%J 物理学报
%D 2011
%I 
%X Quantum Fisher information,derived from the classical Fisher information, is closely related to the quantum entanglement in quantum information. The entanglement and the quantum information which are both associated with the classical phase space are investigated in a two-component Bose-Einstein condensate impacted by the impulses. The results reveal that the states regardless of disorder of the phase space after the first impulse are entangled. However, the quantum information is very sensitive to the state centred in the classical phase space, concretely, the value of the quantum information centred in the chaotic region is greater than in the regular region. By employing the good quantum-classical correspondence, we conclude that the quantum information can serve as a signature of the quantum chaos.
%K quantum Fisher information
%K Bose-Einstein condensate
%K quantum chaos
%K quantum-classical correspondence<br>量子Fisher信息
%K 玻色-爱因斯坦凝聚
%K 量子混沌
%K 量子-经典对应
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=AE5F2209B3AD91E8157EFF8D1C4E9671&yid=9377ED8094509821&vid=BFE7933E5EEA150D&iid=59906B3B2830C2C5&sid=D2120132FEC149F9&eid=D2120132FEC149F9&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=26