利用扭曲光子在晶格上实现的量子行走与波包动力学
量子物理
2015-04-23 v2 光学
摘要
“量子行走” (quantum walk) 最近已成为复杂量子系统动力学模拟、纠缠产生和量子计算的范式过程。迄今为止，量子行走的光子实现主要基于实空间中的多路径干涉方案。在此，我们报道了在光的轨道角动量空间中实现的离散量子行走，适用于单光子和双光子同时情形。与以前的实现相比，整个过程在单束光中发展，无需干涉仪；所需光学资源随步数线性扩展；并且允许灵活控制输入和输出叠加态。利用后一特性，我们通过模拟高斯波包 (Gaussian wavepackets) 的量子动力学，探索了动量空间中的系统能带结构及其相关的自旋 - 轨道拓扑特征。我们的演示引入了一种用于量子模拟的新型多功能光子平台。
引用
@article{arxiv.1407.5424,
title = {Quantum walks and wavepacket dynamics on a lattice with twisted photons},
author = {Filippo Cardano and Francesco Massa and Hammam Qassim and Ebrahim Karimi and Sergei Slussarenko and Domenico Paparo and Corrado de Lisio and Fabio Sciarrino and Enrico Santamato and Robert W. Boyd and Lorenzo Marrucci},
journal= {arXiv preprint arXiv:1407.5424},
year = {2015}
}
备注
This revised version has a new title; few errors have been corrected and some images have been modified in order to present the data clearly. arXiv admin note: substantial text overlap with arXiv:1403.4857