Possibility of observing enhanced photon bunching from two photon emission

Samuel Lemieux, Sohail A. Jalil, David N. Purschke +6 more

Samuel Lemieux

Yoon-Ho Kim

Bi‐Heng Liu, Fang‐Wen Sun, Yan-Xiao Gong +3 more

Photon bunching effect and stimulated emission of single photons is investigated and observed in the parametric amplification process. It is found that the two-photon interference is responsible for the photon bunching effect and stimulated emission, which is discussed in the temporal degree of freedom and in the presence of photon losses. Moreover, the direct measurement of the indistinguishability of two signal photons without any filtering is accomplished via the correlation between the two idler photons from two cascaded parametric down-conversion processes. This result shows that photon indistinguishability plays an essential role in stimulated emission.

Nikolai G. Basov, А. Н. Ораевский, G. M. Strakhovskiǐ

Peilong Hong, Jianbin Liu, Guoquan Zhang

We show that it is possible to control the two-photon bunching property of thermal light in a linear scheme by introducing indistinguishable multiple two-photon paths. Two-photon super bunching of thermal light with a bunching peak-to-background ratio larger than 2 has been observed experimentally.