量子电子学报, 2016, 33 (2): 215, 网络出版: 2016-03-29
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
量子光学 超级量子失协 弱测量 Dzyaloshinski-Moriya相互作用 测量强度 quantum optics super quantum discord weak measurement Dzyaloshinski-Moriya interaction measurement intensity
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。
Abstract
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.
麦麦提依明·吐孙, 艾合买提·阿不力孜, 吴建琴, 王飞, 帕肉克·帕尔哈提. 含Dzyaloshinski-Moriya相互作用的两比特Heisenberg XYZ模型中的超级量子失协[J]. 量子电子学报, 2016, 33(2): 215. TURSUN Mamtimin, ABLIZ Ahmad, WU Jianqin, WANG Fei, PARHAT Paruh. Super quantum discord in two qubit Heisenberg XYZ model with Dzyaloshinski-Moriya interaction[J]. Chinese Journal of Quantum Electronics, 2016, 33(2): 215.
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