中北大学学报（自然科学版）2016，Vol.37Issue(6)：566-569,4.DOI:10.3969/j.issn.1673-3193.2016.06.003
基于弱测量的量子失协
Quantum Discord Based on Weak Measurements
摘要
Abstract
An exploration was made on the relevant issue of quantum discord in quantum information field.Let Hilbert space to be H=HA⊗HB,dimHA=n(2<n<∞),dimHB=m(2<m<∞),ρ∈S(H), which S(H)is the state set of H,then the following statements are equivalent:ρis a product state.ρhas zero super quantum discord.ρhas equal quantum discord and super quantum discord.ρhas zero mu-tual information.ρhas equal quantum discord and mutual information.ρhas equal super quantum dis-cord and mutual information.The results generalize the results of the two-qubit case.关键词
乘积态/弱测量/超量子失协/互信息/量子失协Key words
product state/weak measurements/super quantum discord/mutual information/quantum discord分类
数理科学引用本文复制引用
郝小宁..基于弱测量的量子失协[J].中北大学学报（自然科学版）,2016,37(6):566-569,4.基金项目
国家自然科学基金资助项目(11171249) （11171249）
山西省国际合作项目(2014081027-2) （2014081027-2）
太原理工大学青年基金资助项目(2014QN024) （2014QN024）
