title: Two-photon interference with continuous-wave multi-mode coherent light.
abstract: We report two-photon interference with continuous-wave multi-mode coherent light. We show that the two-photon interference, in terms of the detection time difference, reveals two-photon beating fringes with the visibility V = 0.5. While scanning the optical delay of the interferometer, Hong-Ou-Mandel dips or peaks are measured depending on the chosen detection time difference. The HOM dips/peaks are repeated when the optical delay and the first-order coherence revival period of the multi-mode coherent light are the same. These results help to understand the nature of two-photon interference and also can be useful for quantum information science.
authors.forename: Yong-Su
authors.initials: YS
authors.lastname: Kim
authors.forename: Oliver
authors.initials: O
authors.lastname: Slattery
authors.forename: Paulina S
authors.initials: PS
authors.lastname: Kuo
authors.forename: Xiao
authors.initials: X
authors.lastname: Tang