Performance comparison of ghost imaging versus conventional imaging in photon shot noise cases

• 作者: Qing Zhao Wenlin Gong Zijie Li
• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2020,（7）
• 页码范围: 35-39
• 页数: 5页
• 语种: 英文
• DOI: 10.3788/COL202018.071101

摘要

The performances of ghost imaging and conventional imaging in photon shot noise cases are investigated.We define an imaging signal-to-noise ratio called SNRtran where only the object's transmission region is used to evaluate the imaging quality and it can be applied to ghost imaging (GI) with any random pattern.Both the values SNRtran GI of GI and SNRtran GI of conventional imaging in photon shot noise cases are deduced from a simple statistical analysis.The analytical results,which are backed up by numerical simulations,demonstrate that the value SNRtran GI is related to the ratio between the object's transmission area Ao and the number density of photons illuminating the object plane Io,which is similar to the theoretical results based on the first principle of GI with a Gaussian speckle field deduced by B.I.Erkmen and J.H.Shapiro[in Adv.Opt.Photonics 2,405-450 (2010)].In addition,we also show that the value SNRtran GI will be larger than SNRtran GI when Ao is beyond a threshold value.