量子光学学报, 2016, 22 (3): 215, 网络出版: 2016-12-20
用三比特海森堡XXZ模型实现量子稠密编码
Dense Coding in a Three-Qubit Heisenberg Spin XXZ Chain
摘要
本文主要研究利用各向异性三比特海森堡XXZ模型实现量子稠密编码的理论可行性问题并讨论在有限温度下,xy平面上的耦合常数J,z方向的耦合常数Jz,以及外加磁场对稠密编码信道容量的影响。结果表明,耦合常数J对量子稠密编码信道容量起到积极作用。尽管耦合常数Jz,外加磁场B及温度T均抑制量子稠密编码的信道容量,但是在一定范围内J总可以抵消这些参数的消极作用并提高信道容量。
Abstract
This paper mainly studied the feasibility of quantum dense coding via a model of three qubit anisotropy Heisenberg XXZ spin chain and discussed the effect of magnetic field intensity B,coupling constant J,Jz and temperature Ton quantum channel capacities of quantum dense coding. Results showed that by increasing the coupling constant J the dense coding capacity can be increased effectively. Moreover,J also excels the opponents as Jz,B and T which suppresses the dense coding capacity in some areas.
阿力木·阿布都拉, 日比古·买买提明, 艾合买提·阿不力孜, 麦麦提依明·吐孙, 帕肉克·帕尔哈提, 帕提古丽·马木提, 蔡江涛. 用三比特海森堡XXZ模型实现量子稠密编码[J]. 量子光学学报, 2016, 22(3): 215. Alim Abdulla, Rabigul Mamtimin, Ahmad Abliz, Mamtimin Tursun, Parouke Paerhati, Patigul Mamut, CAI Jiang-tao. Dense Coding in a Three-Qubit Heisenberg Spin XXZ Chain[J]. Acta Sinica Quantum Optica, 2016, 22(3): 215.