CAJ | 학술논문

基于Hanbury Brown-Twiss （HBT）实验，我们借助于两个单光子计数模块，一个50/50分束器和一个快速计数卡（FastCom-P7888）研究了不同光场的二阶相干度。我们首先制备了脉冲相干光，连续相干光以及单原子发出的单光子源，并测量这几种不同光场的二阶相干度 g（2）（τ）。我们通过测量俘获在磁光阱（MOT）和远失谐偶极阱（FORT ）中的单原子在近共振连续激光激发下所辐射的荧光的二阶相干度，分别得到了 g（2）（τ＝0）＝0.08和g（2）（τ＝0）＝0.09，借助于实验中产生的脉冲光与单原子，接下来我们将进行触发式单光子源的实验研究。
기우Hanbury Brown-Twiss （HBT）실험，아문차조우량개단광자계수모괴，일개50/50분속기화일개쾌속계수잡（FastCom-P7888）연구료불동광장적이계상간도。아문수선제비료맥충상간광，련속상간광이급단원자발출적단광자원，병측량저궤충불동광장적이계상간도 g（2）（τ）。아문통과측량부획재자광정（MOT）화원실해우겁정（FORT ）중적단원자재근공진련속격광격발하소복사적형광적이계상간도，분별득도료 g（2）（τ＝0）＝0.08화g（2）（τ＝0）＝0.09，차조우실험중산생적맥충광여단원자，접하래아문장진행촉발식단광자원적실험연구。
We investigated the properties of various light fields based on the Hanbury-Brown-Twiss (HBT) experiment consisted by two single-photon-counting modules (SPCMs) ,one 50/50 beam splitter and the Fast-Com P7888 card .Having experimentally investigated the second-order degree of coherence g2 (τ) for the continuous-wave and the pulse lasers and the single-photon source generated by single atom ,we confirmed the experiment results by theoretical analysis .Specially ,we have achieved a high quality of single-photon source based on single atom trapped in the magnetic-optical trap and the far-off-resonance trap with g(2) (τ=0)=0.09 and g(2) (τ=0)=0.08 ,respectively .Using the pulse laser and the single atom , we can perform the triggered single photon experiment .