Determination of signal-to-background ratio of single molecular photon source based on photon counting statistics
Xiao-Bo Wang, Huang Tao, Shao Jun-Hu, Yu‐Qiang Jiang, Liantuan Xiao, Jia Suo-Tang, 山西大学物理电子工程学院,量子光学与光量子器件国家重点实验室,太原 030006 · Acta Physica Sinica · 2005
The real triggered single molecule source is recognized as an ideal single photon source with a Poissonian statistics background. By considering the effect of the triplet state in single molecule energy level, an explicit function is given for the signaltobackgound ratio(SBR) by use of photoncounting statistics. When PRS(1)2PRS(2)-3PRS(2), we present an effici ent method to determine the SBR of the triggered single photons source, which s hows SBR=P2RS(1)/2PRS(2).In addition, the expression of Q, as a function of signaltobackgound ratio, has been obtained. It turns o ut that this method is simpler and gives a greater accuracy than previous proce dures.