Adjusting the properties of the photon generated via an optical parametric oscillator by using a pulse pumped laser  

作　　者：陈嵩 史保森 郭光灿 

机构地区：[1]Key Laboratory of Quantum Information,University of Science and Technology of China

出　　处：《Chinese Physics B》2011年第11期267-273,共7页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.10874171);the National Basic Research Program of China(Grant No.2009CB929601);the Innovation Fund from Chinese Academy of Sciences;the Program for New Century Excellent Talents in University of China(Grant No.NCET-07-0791)

摘　　要：The cavity-enhanced spontaneous parametric down-conversion far below threshold can be used to generate a narrow-band photon pair efficiently. Previous experiments on the cavity-enhanced spontaneous parametric down- conversion almost always utilize continuous wave pump light, but the pulse pumped case is rarely reported. One disadvantage of the continuous wave case is that the photon pair is produced randomly within the coherence time of the pump, which limits its application in the quantum information realm. However, a pulse pump can help to solve this problem. In this paper, we theoretically analyze pulse pumped cavity-enhanced spontaneous parametric down- conversion in detail and show how the pump pulse affects the multi-photon interference visibility, two-photon waveform, joint spectrum and spectral brightness.The cavity-enhanced spontaneous parametric down-conversion far below threshold can be used to generate a narrow-band photon pair efficiently. Previous experiments on the cavity-enhanced spontaneous parametric down- conversion almost always utilize continuous wave pump light, but the pulse pumped case is rarely reported. One disadvantage of the continuous wave case is that the photon pair is produced randomly within the coherence time of the pump, which limits its application in the quantum information realm. However, a pulse pump can help to solve this problem. In this paper, we theoretically analyze pulse pumped cavity-enhanced spontaneous parametric down- conversion in detail and show how the pump pulse affects the multi-photon interference visibility, two-photon waveform, joint spectrum and spectral brightness.

关 键 词：spontaneous parametric down-conversion PHOTON pulse pumped quantum optics 

分 类 号：O437.4[机械工程—光学工程]