Limits on manipulating conditional photon statistics via interference of weak lasers

Kang Hee Hong, Jisung Jung, Young Wook Cho, Sang Wook Han, Sung Moon, Kyunghwan Oh, Yong Su Kim, Yoon Ho Kim

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Photon anti-bunching, measured via the Hanbury-Brown-Twiss experiment, is one of the key signatures of quantum light and is tied to sub-Poissonian photon number statistics. Recently, it has been reported that photon anti-bunching or conditional sub-Poissonian photon number statistics can be obtained via second-order interference of mutually incoherent weak lasers and heralding based on photon counting [Phys. Rev. A 92, 033855 (2015); Opt. Express 24, 19574 (2016);]. Here, we report theoretical analysis on the limits of manipulating conditional photon statistics via interference of weak lasers. It is shown that conditional photon number statistics can become super-Poissonian in such a scheme. We, however, demonstrate explicitly that it cannot become sub-Poissonian, i.e., photon anti-bunching cannot be obtained in such a scheme. We point out that incorrect results can be obtained if one does not properly account for seemingly negligible higher-order photon number expansions of the coherent state.

Original languageEnglish
Pages (from-to)10610-10621
Number of pages12
JournalOptics Express
Issue number9
Publication statusPublished - 2017 May 1

Bibliographical note

Funding Information:
National Research Foundation (Grant No. 2016R1A2A1A05005202 and No. 2016R1A4A1008978); ICT RandD program of MSIP/IITP (B0101-16-1355); KIST institutional program (Project No. 2E26680-16-P024, 2E27231, 2V05340).

Publisher Copyright:
© 2017 Optical Society of America.

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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