Entangled two-photon wave packet in a dispersive medium.
Entangled two-photon wave packet in a dispersive medium.
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DOI：
10.1103/physrevlett.88.183601
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发表时间：
2002-04
影响因子：
8.6
通讯作者：
A. Valencia;M. Chekhova;A. Trifonov;Y. Shih
中科院分区：
文献类型：
--
作者：
A. Valencia;M. Chekhova;A. Trifonov;Y. Shih
本文报道了一个通过自发参量下转换产生的纠缠双光子波包在色散介质中传播时群速度色散效应的实验研究。即使在连续激光泵浦的情况下，双光子波包和二阶关联函数也有明显的展宽。对这一现象的研究和理解对于量子信息的应用，如量子通信和远距离时钟同步具有重要意义。
We report an experimental study of group-velocity dispersion effect on an entangled two-photon wave packet, generated via spontaneous parametric down-conversion and propagating through a dispersive medium. Even in the case of using cw laser beam for pump, the biphoton wave packet and the second-order correlation function spread significantly. The study and understanding of this phenomenon is of great importance for quantum information applications, such as quantum communication and distant clock synchronization.