引用本文
  •    [点击复制]
  •    [点击复制]
【打印本页】 【在线阅读全文】【下载PDF全文】 查看/发表评论下载PDF阅读器关闭

←前一篇|后一篇→

过刊浏览    高级检索

本文已被:浏览 153次   下载 234 本文二维码信息
码上扫一扫!
单光子源及在量子信息领域的应用
段兆晨,李金朋,何玉明
0
(中国科学技术大学近代物理系,合肥 230026;中国科学技术大学近代物理系,合肥,230026;中国科学技术大学合肥微尺度物质科学国家实验室, 合肥 230026)
摘要:
光量子比特是量子计算和量子通信的理想候选体系之一。高效率、高品质、确定性的单光子源是实现光学量子计算和绝对安全量子通信的重要前提条件。自组装半导体量子点,又称“人造原子”,具有优良的单光子性和光子全同性,是理想的单光子源。此外,量子点可以通过外加电场,囚禁单个原子或空穴,作为光子-自旋比特的界面,构建可扩展光量子网络。微柱腔耦合的量子点,拥有很强的Purcell效应,在保持单光子性和光子全同性的同时,大大地提高了提取效率,且具有很好的相干性,可用于大规模量子计算。近年来,人们在二维单原子层材料中发现了非经典的单光子发射,使二维材料和量子光学领域得到了结合,开辟了新的研究路线:探索单原子层材料在量子技术的潜在应用。和传统固态单光子源系统相比,二维材料更易于与其他光电平台结合,可人为控制缺陷位置,有利于推动高品质、低成本单光子源的发展,得到了科学家的广泛关注。本报告首先从量子计算和量子通信两方面提出发展单光子源的意义,接着介绍单光子源的性质和产生原理,然后介绍单光子源在自组装半导体量子点和二维单原子层材料中的实现和发展,最后从光子-自旋量子隐形传态和玻色采样实验中讨论单光子源在量子计算和量子网络方面的应用前景。
关键词:  量子点,单光子源,二维材料,量子计算,量子信息
DOI:
基金项目:
Single-Photon Source and its Application on Quantum Information
DUAN Zhaochen,LI Jinpeng,HE Yuming
(Department of Modern Physics, University of Science and Technology of China, Hefei 230026,China;Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, China)
Abstract:
Photon is one of the ideal candidates for quantum computation and quantum communication. On-demand single-photon source with high efficiency and high quality is an important prerequisite for optical quantum computation and absolute secure quantum communication. Self-assembled quantum dots, also called “artificial atoms", have excellent single photon performance and indistinguishability,are ideal single photon sources. Moreover,by applying an electric field,quantum dot cantrap a single electron or hole as a spin-photon interface, which can construct scalable optical quantum networks. Quantum dot in micropillar has strong Purcell effect, which can greatly improve the extraction efficiency with single photon performance and indistinguishability maintained.It also has good coherence and can be used for large-scale quantum computation. In recent years, the discovery of non-classical single-photon emission in monolayer 2D materials have combined 2D materials with the quantum optics, whichopen a new line of investigation the potential of monolayer for quantum technology. Compared with traditional solid-state single-photon sources, 2D materials can easily combine with other optoelectronic platforms.They canalso artificially control the position of defects, which is conducive to the development of single-photon sources with high-quality and low-cost.This has received extensive attention from scientists. In this report, we firstlycome up withthe significance of developing single photon sources from quantum computation and quantum communication. Secondlywe introduce the performances and principles of single photon sources.Then we introduce single photon sourceson self-assembled quantum dots and 2D monolayer materials and theirrealization and development.Finally, fromspin-photon quantum teleportation and boson sampling experiment, we discuss the application prospects of single photon sources in quantum computation and quantum networks.
Key words:  quantum dot, single-photon source, 2D material, quantum computation, quantum information

用微信扫一扫

用微信扫一扫