含Dzyaloshinski-Moriya相互作用的两比特Heisenberg XYZ模型中的超级量子失协  

Super quantum discord in two qubit Heisenberg XYZ model with Dzyaloshinski-Moriya interaction

作　　者：麦麦提依明.吐孙[1] 艾合买提.阿不力孜[1] 吴建琴[1] 王飞[1] 帕肉克.帕尔哈提 

机构地区：[1]新疆师范大学物理与电子工程学院,新疆乌鲁木齐830054

出　　处：《量子电子学报》2016年第2期215-219,共5页Chinese Journal of Quantum Electronics

基　　金：新疆维吾尔自治区高校科研计划青年教师科研启动基金项目;XJEDU2014S035;新疆师范大学理论物理自治区重点学科招标课题;14XSQZ0602~~

摘　　要：为了体现超级量子失协比普通量子失协的优越性,计算并对比分析了含Dzyaloshinski—Moriya相互作用的Heisenberg XYZ模型处于热平衡下的超级量子失协和普通量子失协。研究结果表明:超级量子失协总是大于普通量子失协,而且Dzyaloshinski-Moriya相互作用对超级量子失协起着积极作用;温度对超级量子失协的影响比普通量子失协小得多;以弱测量替换普通量子测量可以提高量子态的稳定性。In order to show the advantages of the super quantum discord with regard to the normal quantum discord,the super quantum discord and normal quantum discord in thermal equilibrium Heisenberg XYZ model with Dzyaloshinski-Moriya interaction were calculated and analyzed.The results show that the super quantum discord is always larger than the normal quantum discord and Dzyaloshinski-Moriya interaction plays a positive role to the super quantum discord.The super quantum discord is less affected by temperature than normal quantum discord.The stability of the quantum state can be improved by changing the ordinary quantum measurement with weak measurement.

关 键 词：量子光学 超级量子失协 弱测量 Dzyaloshinski-Moriya相互作用 测量强度 

分 类 号：O431.2[机械工程—光学工程]