纠的光子对的超亮光源
Adrien Dousse1, Jan Suffczyński, Alexios Beveratos
1Laboratoire de Photonique et de Nanostructures, CNRS, route de Nozay, 91460 Marcoussis, France.
Nature
|July 9, 2010
概括
研究人员开发了一种新方法,以更高的速度产生纠的光子对. 这一突破通过提高纠光子源的效率来增强量子信息科学应用.
科学领域:
- 量子信息科学 量子信息科学
- 固态物理 固态物理
- 量子光学是一种量子光学.
背景情况:
- 纠的光子对源对于量子信息科学至关重要,但其产生率较低.
- 像参数转换和量子点这样的现有方法在效率和提取方面都有局限性.
研究的目的:
- 为了克服基于量子点的纠光子源的低提取效率.
- 开发一个固态触发源的纠的光子对,以提高性能.
主要方法:
- 将一个单一的量子点与一个"光子分子"光学空腔相合.
- 使用光学光刻法对量子点能量状态进行确定性合.
- 使用Purcell效应来增强进入空洞模式的排放.
主要成果:
- 实现了每次激发脉冲0.12的极化纠光子对速率.
- 对于纠的光子对来说,显示出80%的整体创建和收集效率.
- 改善了光学重组路径的不可分辨性.
结论:
- 将量子点与光子分子腔相合显著提高了纠的光子对生成和收集率.
- 这种方法为高效的纠光子固态源铺平了道路.
- 能够在实践中实现量子计算和远程传输.
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