• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nature >Quantum interference between two single photons emitted by independently trapped atoms
【24h】

Quantum interference between two single photons emitted by independently trapped atoms

机译：独立俘获的原子发射的两个单光子之间的量子干涉

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

When two indistinguishable single photons are fed into the two input ports of a beam splitter, the photons will coalesce and leave together from the same output port. This is a quantum interference effect, which occurs because two possible paths—in which the photons leave by different output ports—interfere destructively. This effect was first observed in parametric downconver-sion (in which a nonlinear crystal splits a single photon into two photons of lower energy), then from two separate downconversion crystals, as well as with single photons produced one after the other by the same quantum emitter. With the recent developments in quantum information research, much attention has been devoted to this interference effect as a resource for quantum data processing using linear optics techniques. To ensure the scalability of schemes based on these ideas, it is crucial that indistinguishable photons are emitted by a collection of synchronized, but otherwise independent sources. Here we demonstrate the quantum interference of two single photons emitted by two independently trapped single atoms, bridging the gap towards the simultaneous emission of many indistinguishable single photons by different emitters. Our data analysis shows that the observed coalescence is mainly limited by wavefront matching of the light emitted by the two atoms, and to a lesser extent by the motion of each atom in its own trap.
机译：当将两个无法区分的单个光子馈入分束器的两个输入端口时，这些光子将聚结并从同一输出端口一起离开。这是量子干涉效应，其发生是因为两条可能的路径（光子在其中通过不同的输出端口离开）会产生相消干涉。首先在参数下转换中观察到这种效应（非线性晶体将单个光子分裂为两个能量较低的光子），然后从两个单独的下转换晶体中分离出来，以及单个光子通过相同的量子一个接一个地产生发射器。随着量子信息研究的最新发展，已经将这种干扰效应作为使用线性光学技术进行量子数据处理的资源进行了大量关注。为了确保基于这些思想的方案的可伸缩性，至关重要的是，不可区分的光子由一组同步但独立的光源发出。在这里，我们展示了由两个独立俘获的单个原子发射的两个单光子的量子干涉，弥合了不同发射器同时发射许多无法区分的单光子的间隙。我们的数据分析表明，观察到的聚结主要受到两个原子发出的光的波前匹配的限制，并且在较小程度上受每个原子在其自身陷阱中的运动的限制。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号