J4 ›› 2015, Vol. 32 ›› Issue (5): 595-599.

• 量子光学 • 上一篇    下一篇

一维量子点阵列的自旋链上信息传输

罗国忠   

  1. 忻州师范学院物理系, 山西 忻州 034000
  • 收稿日期:2014-10-13 修回日期:2015-04-03 出版日期:2015-09-28 发布日期:2015-09-28
  • 通讯作者: 罗国忠(1977--)山西忻州人,硕士,长期从事理论物理的研究。主要研究方向:介观输运 E-mail:luoguozhong2013@163.com

Information transmission in spin chain of one-dimentional linear quantum dot array

LUO Guozhong   

  1. Department of physics Xinzhou Teachers university, Xinzhou 034000, China
  • Received:2014-10-13 Revised:2015-04-03 Published:2015-09-28 Online:2015-09-28

摘要:

基于紧束缚模型的实空间格点组成的一维线性均匀有序的量子点阵列为研究对象,然后利用演化算符的作用使其在量子点阵列的自旋链上进行单量子比特的信息传输。即使用演化算符 使单比特量子态从量子点阵列起始端为多粒子态 传输到末端态为 ,最后在此基础上计算概率来讨论了单量子比特能从起始端的多粒子态 的第一个量子比特完全传输到态 的末端第N个量子比特是可能的。

关键词: 量子物理, 信息传输, 演化算符的泰勒展开, 量子点阵列, 线性自旋链, 一维单量子比特

Abstract:

The paper firstly researched the quantum dot array, which is consisting of a uniform and orderly quantum dot based on one-dimensional linear real space lattice of tight-binding model, and then use the evolution operater to make a single qubit in a spin chain of quantum dot array transferring the information.That is to say, it is so that the information of one-qubit is transferred to the terminal state from the multi-particle state of initating terminal of the quantum dot array that the information is transferred to use the evolution operater , on the basis of the final calculation of probability to discuss ,it is completely possible that the information of one-qubit is transferred from the first qubit to the N qubit of the end.

Key words: quantum physics, information transfer, Taylor series of evolution operator, quantum dot array, linear spin chain; one-dimension, one-qubit

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