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arXiv 1406.7631quant-phcond-mat.str-el
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海森堡模型中自旋脉冲控制的动力学拓扑量子计算

Dynamical topological quantum computation using spin pulse control in the Heisenberg model

Tetsufumi Tanamoto, Keiji Ono, Yu-xi Liu, Franco Nori

摘要:

当合适的材料在自然界中不存在或不稳定时,哈密顿工程是量子信息处理的重要途径。到目前为止,还没有一个稳定的材料的Kitaev自旋哈密顿量与各向异性相互作用的蜂窝晶格(A。Kitaev,Annals of Physics vol 321,2(2006)),它在阿贝尔和非阿贝尔任意子的实现中起着至关重要的作用。在这里,我们展示了如何动态实现Kitaev自旋哈密顿量从传统的海森堡自旋哈密顿量使用脉冲控制技术。通过重复相同的脉冲序列,动态地保持量子态。研究了自旋-轨道相互作用和超精细相互作用的影响。

英文摘要:

Hamiltonian engineering is an important approach for quantum information processing, when appropriate materials do not exist in nature or are unstable. So far there is no stable material for the Kitaev spin Hamiltonian with anisotropic interactions on a honeycomb lattice (A. Kitaev, Annals of Physics vol 321, 2 (2006)), which plays a crucial role in the realization of both Abelian and non-Abelian anyons. Here, we show how to dynamically realize the Kitaev spin Hamiltonian from the conventional Heisenberg spin Hamiltonian using a pulse-control technique. By repeating the same pulse sequence, the quantum state is dynamically preserved. The effects of the spin-orbit interaction and the hyperfine interaction are also investigated.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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