...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Weak coherent pulses for single-photon quantum memories
【24h】

Weak coherent pulses for single-photon quantum memories

机译：单光子量子存储器的弱相干脉冲

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

Attenuated laser pulses are often employed in place for single photons in order to test the efficiency of the elements of a quantum network. In this work we analyze theoretically the dynamics of storage of an attenuated light pulse (where the pulse intensity is at the single photon level) propagating along a transmission line and impinging on the mirror of a high finesse cavity. Storage is realized by the controlled transfer of the photonic excitations into a metastable state of an atom confined inside the cavity and occurs via a Raman transition with a suitably tailored laser pulse, which drives the atom and minimizes reflection at the cavity mirror. We determine the storage efficiency of the weak coherent pulse which is reached by protocols optimized for single-photon storage. We determine the figures of merit and we identify the conditions on an arbitrary pulse for which the storage dynamics approaches the one of a single photon. Our formalism can be extended to arbitrary types of input pulses and to quantum memories composed by spin ensembles, and serves as a basis for identifying the optimal protocols for storage and readout.
机译：对于单个光子，通常使用衰减的激光脉冲以测试量子网络元件的效率。在这项工作中，我们经理论上分析了沿传输线传播的衰减光脉冲（脉冲强度处的单个光子电平的脉冲强度的储存动力学和撞击高精度腔的镜子。通过将光子激发的控制传递到腔内限制的原子的亚稳态的传递和通过拉曼过渡，通过具有适当定制的激光脉冲发生的稳定性的激光脉冲来实现储存，该激光脉冲驱动原子并最小化腔体镜子处的反射。我们确定弱相干脉冲的存储效率，该脉冲由针对单光子存储优化的协议达到。我们确定优点的图，我们识别了存储动力学接近单个光子之一的任意脉冲的条件。我们的形式主义可以扩展到任意类型的输入脉冲以及由旋转集合组成的量子存储器，并用作识别存储和读数的最佳协议的基础。

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